22011111019956 has 48 divisors (see below), whose sum is σ = 54582549658560. Its totient is φ = 6879775772160.

The previous prime is 22011111019949. The next prime is 22011111019957. The reversal of 22011111019956 is 65991011111022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011111019957) 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 15 ways as a sum of consecutive naturals, for example, 200498290 + ... + 200608041.

It is an arithmetic number, because the mean of its divisors is an integer number (1137136451220).

Almost surely, 2^{22011111019956} is an apocalyptic number.

It is an amenable number.

22011111019956 is an abundant number, since it is smaller than the sum of its proper divisors (32571438638604).

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

22011111019956 is a wasteful number, since it uses less digits than its factorization.

22011111019956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401106624 (or 401106622 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 39.

The spelling of 22011111019956 in words is "twenty-two trillion, eleven billion, one hundred eleven million, nineteen thousand, nine hundred fifty-six".