22001122109978 has 128 divisors (see below), whose sum is σ = 38833520947200. Its totient is φ = 9243183456000.

The previous prime is 22001122109917. The next prime is 22001122110007. The reversal of 22001122109978 is 87990122110022.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1744314800 + ... + 1744327412.

It is an arithmetic number, because the mean of its divisors is an integer number (303386882400).

Almost surely, 2^{22001122109978} is an apocalyptic number.

22001122109978 is a deficient number, since it is larger than the sum of its proper divisors (16832398837222).

22001122109978 is a wasteful number, since it uses less digits than its factorization.

22001122109978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348.

The product of its (nonzero) digits is 72576, while the sum is 44.

Adding to 22001122109978 its sum of digits (44), we get a palindrome (22001122110022).

The spelling of 22001122109978 in words is "twenty-two trillion, one billion, one hundred twenty-two million, one hundred nine thousand, nine hundred seventy-eight".