22112111112012 has 18 divisors (see below), whose sum is σ = 55894503088788. Its totient is φ = 7370703703992.

The previous prime is 22112111112011. The next prime is 22112111112037. The reversal of 22112111112012 is 21021111121122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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 (22112111112011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307112654298 + ... + 307112654369.

Almost surely, 2^{22112111112012} is an apocalyptic number.

It is an amenable number.

22112111112012 is an abundant number, since it is smaller than the sum of its proper divisors (33782391976776).

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

22112111112012 is a wasteful number, since it uses less digits than its factorization.

22112111112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614225308677 (or 614225308672 counting only the distinct ones).

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

Adding to 22112111112012 its reverse (21021111121122), we get a palindrome (43133222233134).

The spelling of 22112111112012 in words is "twenty-two trillion, one hundred twelve billion, one hundred eleven million, one hundred twelve thousand, twelve".