20210211100972 has 48 divisors (see below), whose sum is σ = 38956077468000. Its totient is φ = 9131432489984.

The previous prime is 20210211100931. The next prime is 20210211100973. The reversal of 20210211100972 is 27900111201202.

It is a self number, because there is not a number n which added to its sum of digits gives 20210211100972.

It is not an unprimeable number, because it can be changed into a prime (20210211100973) 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, 28274347 + ... + 28980322.

It is an arithmetic number, because the mean of its divisors is an integer number (811584947250).

Almost surely, 2^{20210211100972} is an apocalyptic number.

It is an amenable number.

20210211100972 is a deficient number, since it is larger than the sum of its proper divisors (18745866367028).

20210211100972 is a wasteful number, since it uses less digits than its factorization.

20210211100972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57254898 (or 57254896 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 20210211100972 in words is "twenty trillion, two hundred ten billion, two hundred eleven million, one hundred thousand, nine hundred seventy-two".