22111101999956 has 48 divisors (see below), whose sum is σ = 40767981024960. Its totient is φ = 10464166932480.

The previous prime is 22111101999949. The next prime is 22111102000019. The reversal of 22111101999956 is 65999910111122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343886626 + ... + 1343903078.

It is an arithmetic number, because the mean of its divisors is an integer number (849332938020).

Almost surely, 2^{22111101999956} is an apocalyptic number.

It is an amenable number.

22111101999956 is a deficient number, since it is larger than the sum of its proper divisors (18656879025004).

22111101999956 is a wasteful number, since it uses less digits than its factorization.

22111101999956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31464 (or 31462 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 56.

The spelling of 22111101999956 in words is "twenty-two trillion, one hundred eleven billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred fifty-six".