122211743251556 has 24 divisors (see below), whose sum is σ = 246665903816640. Its totient is φ = 51895943397792.

The previous prime is 122211743251531. The next prime is 122211743251561. The reversal of 122211743251556 is 655152347112221.

It is a super-2 number, since 2×122211743251556² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122211743251556.

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, 20021580050 + ... + 20021586153.

It is an arithmetic number, because the mean of its divisors is an integer number (10277745992360).

Almost surely, 2^{122211743251556} is an apocalyptic number.

It is an amenable number.

122211743251556 is an abundant number, since it is smaller than the sum of its proper divisors (124454160565084).

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

122211743251556 is a wasteful number, since it uses less digits than its factorization.

122211743251556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40043166323 (or 40043166321 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 47.

The spelling of 122211743251556 in words is "one hundred twenty-two trillion, two hundred eleven billion, seven hundred forty-three million, two hundred fifty-one thousand, five hundred fifty-six".