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10122212220220 = 2251253834036517
BaseRepresentation
bin1001001101001100001011…
…0111010001110100111100
31022211200012101002021222001
42103103002313101310330
52311320242312021340
633310025145032044
72063206566153322
oct223230267216474
938750171067861
1010122212220220
113252895a04a11
121175904485624
1358569c762529
1426dcbc1b3d12
1512847e22b29a
hex934c2dd1d3c

10122212220220 has 24 divisors (see below), whose sum is σ = 21256820462304. Its totient is φ = 4048851592896.

The previous prime is 10122212220187. The next prime is 10122212220221. The reversal of 10122212220220 is 2202221222101.

10122212220220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×101222122202202 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122212220221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489402 + ... + 4525918.

It is an arithmetic number, because the mean of its divisors is an integer number (885700852596).

Almost surely, 210122212220220 is an apocalyptic number.

10122212220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10122212220220 is an abundant number, since it is smaller than the sum of its proper divisors (11134608242084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10122212220220 is a wasteful number, since it uses less digits than its factorization.

10122212220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161909 (or 4161907 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10122212220220 its reverse (2202221222101), we get a palindrome (12324433442321).

The spelling of 10122212220220 in words is "ten trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 125383 250766 501532 626915 1253830 2507660 4036517 8073034 16146068 20182585 40365170 80730340 506110611011 1012221222022 2024442444044 2530553055055 5061106110110 10122212220220