22111120199978 has 24 divisors (see below), whose sum is σ = 33500541119616. Its totient is φ = 10945371575600.

The previous prime is 22111120199977. The next prime is 22111120199989. The reversal of 22111120199978 is 87999102111122.

It is a super-2 number, since 2×22111120199978² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22111120199977) 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 11 ways as a sum of consecutive naturals, for example, 436720301 + ... + 436770927.

It is an arithmetic number, because the mean of its divisors is an integer number (1395855879984).

Almost surely, 2^{22111120199978} is an apocalyptic number.

22111120199978 is a deficient number, since it is larger than the sum of its proper divisors (11389420919638).

22111120199978 is a wasteful number, since it uses less digits than its factorization.

22111120199978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72238 (or 72137 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 53.

The spelling of 22111120199978 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty million, one hundred ninety-nine thousand, nine hundred seventy-eight".