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10020223221 = 34377676149
BaseRepresentation
bin10010101010100000…
…00111100011110101
3221212022211002011120
421111100013203311
5131010134120341
64334144054153
7503211330531
oct112520074365
927768732146
1010020223221
114282178018
121b37904359
13c38c4b388
146b0b08bc1
153d9a55066
hex2554078f5

10020223221 has 8 divisors (see below), whose sum is σ = 13671002400. Its totient is φ = 6524796432.

The previous prime is 10020223201. The next prime is 10020223253. The reversal of 10020223221 is 12232202001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10020223221 - 25 = 10020223189 is a prime.

It is a super-2 number, since 2×100202232212 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10020223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020223201) 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, 38837946 + ... + 38838203.

It is an arithmetic number, because the mean of its divisors is an integer number (1708875300).

Almost surely, 210020223221 is an apocalyptic number.

It is an amenable number.

10020223221 is a deficient number, since it is larger than the sum of its proper divisors (3650779179).

10020223221 is an equidigital number, since it uses as much as digits as its factorization.

10020223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77676195.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 10020223221 its reverse (12232202001), we get a palindrome (22252425222).

The spelling of 10020223221 in words is "ten billion, twenty million, two hundred twenty-three thousand, two hundred twenty-one".

Divisors: 1 3 43 129 77676149 233028447 3340074407 10020223221