22111201019978 has 64 divisors (see below), whose sum is σ = 39625433487360. Its totient is φ = 9047618112192.

The previous prime is 22111201019977. The next prime is 22111201019981. The reversal of 22111201019978 is 87991010211122.

It is a super-2 number, since 2×22111201019978² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22111201019977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794581301 + ... + 794609127.

It is an arithmetic number, because the mean of its divisors is an integer number (619147398240).

Almost surely, 2^{22111201019978} is an apocalyptic number.

22111201019978 is a deficient number, since it is larger than the sum of its proper divisors (17514232467382).

22111201019978 is a wasteful number, since it uses less digits than its factorization.

22111201019978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32291.

The product of its (nonzero) digits is 36288, while the sum is 44.

The spelling of 22111201019978 in words is "twenty-two trillion, one hundred eleven billion, two hundred one million, nineteen thousand, nine hundred seventy-eight".