22122111121012 has 24 divisors (see below), whose sum is σ = 46572865519040. Its totient is φ = 8981909778240.

The previous prime is 22122111121003. The next prime is 22122111121037. The reversal of 22122111121012 is 21012111122122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20791457289 + ... + 20791458352.

Almost surely, 2^{22122111121012} is an apocalyptic number.

It is an amenable number.

22122111121012 is an abundant number, since it is smaller than the sum of its proper divisors (24450754398028).

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

22122111121012 is a wasteful number, since it uses less digits than its factorization.

22122111121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41582915671 (or 41582915669 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22122111121012 its reverse (21012111122122), we get a palindrome (43134222243134).

The spelling of 22122111121012 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, twelve".