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23100222220 = 2254663247697
BaseRepresentation
bin10101100000111000…
…010110101100001100
32012121220010212121221
4111200320112230030
5334302124102340
614340113533124
71445305435435
oct254070265414
965556125557
1023100222220
119884522949
1245882741a4
132241a7cb5a
141191d3a48c
1590300a44a
hex560e16b0c

23100222220 has 24 divisors (see below), whose sum is σ = 48521065824. Its totient is φ = 9238070016.

The previous prime is 23100222209. The next prime is 23100222289. The reversal of 23100222220 is 2222200132.

It is a super-2 number, since 2×231002222202 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23100222194 and 23100222203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30589 + ... + 217108.

It is an arithmetic number, because the mean of its divisors is an integer number (2021711076).

Almost surely, 223100222220 is an apocalyptic number.

23100222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23100222220 is an abundant number, since it is smaller than the sum of its proper divisors (25420843604).

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

23100222220 is a wasteful number, since it uses less digits than its factorization.

23100222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252369 (or 252367 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 23100222220 its reverse (2222200132), we get a palindrome (25322422352).

The spelling of 23100222220 in words is "twenty-three billion, one hundred million, two hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 4663 9326 18652 23315 46630 93260 247697 495394 990788 1238485 2476970 4953940 1155011111 2310022222 4620044444 5775055555 11550111110 23100222220