222221100000012 has 24 divisors (see below), whose sum is σ = 532529843244336. Its totient is φ = 72071708107968.

The previous prime is 222221099999887. The next prime is 222221100000017. The reversal of 222221100000012 is 210000001122222.

It is a junction number, because it is equal to n+sod(n) for n = 222221099999937 and 222221100000000.

It is not an unprimeable number, because it can be changed into a prime (222221100000017) 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, 250248986043 + ... + 250248986930.

It is an arithmetic number, because the mean of its divisors is an integer number (22188743468514).

Almost surely, 2^{222221100000012} is an apocalyptic number.

It is an amenable number.

222221100000012 is an abundant number, since it is smaller than the sum of its proper divisors (310308743244324).

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

222221100000012 is a wasteful number, since it uses less digits than its factorization.

222221100000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500497973017 (or 500497973015 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222221100000012 its reverse (210000001122222), we get a palindrome (432221101122234).

The spelling of 222221100000012 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred million, twelve", and thus it is an aban number.