222101110111212 has 24 divisors (see below), whose sum is σ = 575817692881200. Its totient is φ = 74033703370368.

The previous prime is 222101110111169. The next prime is 222101110111213. The reversal of 222101110111212 is 212111011101222.

It is a happy number.

222101110111212 is a `hidden beast` number, since 22 + 210 + 1 + 110 + 111 + 212 = 666.

It is a super-2 number, since 2×222101110111212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222101110111213) 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, 1028245880037 + ... + 1028245880252.

It is an arithmetic number, because the mean of its divisors is an integer number (23992403870050).

Almost surely, 2^{222101110111212} is an apocalyptic number.

It is an amenable number.

222101110111212 is an abundant number, since it is smaller than the sum of its proper divisors (353716582769988).

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

222101110111212 is a wasteful number, since it uses less digits than its factorization.

222101110111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056491760302 (or 2056491760294 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 222101110111212 its reverse (212111011101222), we get a palindrome (434212121212434).

The spelling of 222101110111212 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred ten million, one hundred eleven thousand, two hundred twelve".