222100111212 has 24 divisors (see below), whose sum is σ = 592266963456. Its totient is φ = 63457174608.

The previous prime is 222100111187. The next prime is 222100111213. The reversal of 222100111212 is 212111001222.

It is a junction number, because it is equal to n+sod(n) for n = 222100111191 and 222100111200.

It is not an unprimeable number, because it can be changed into a prime (222100111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1322024388 + ... + 1322024555.

It is an arithmetic number, because the mean of its divisors is an integer number (24677790144).

Almost surely, 2^222100111212 is an apocalyptic number.

It is an amenable number.

222100111212 is an abundant number, since it is smaller than the sum of its proper divisors (370166852244).

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

222100111212 is a wasteful number, since it uses less digits than its factorization.

222100111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644048957 (or 2644048955 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222100111212 its reverse (212111001222), we get a palindrome (434211112434).

The spelling of 222100111212 in words is "two hundred twenty-two billion, one hundred million, one hundred eleven thousand, two hundred twelve".