22222121012112 has 80 divisors (see below), whose sum is σ = 65987404928640. Its totient is φ = 6312476967936.

The previous prime is 22222121012111. The next prime is 22222121012137. The reversal of 22222121012112 is 21121012122222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22222121012111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191090037 + ... + 191206292.

It is an arithmetic number, because the mean of its divisors is an integer number (824842561608).

Almost surely, 2^{22222121012112} is an apocalyptic number.

It is an amenable number.

22222121012112 is an abundant number, since it is smaller than the sum of its proper divisors (43765283916528).

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

22222121012112 is a wasteful number, since it uses less digits than its factorization.

22222121012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382296520 (or 382296514 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22222121012112 its reverse (21121012122222), we get a palindrome (43343133134334).

The spelling of 22222121012112 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, one hundred twelve".