202100999972 has 24 divisors (see below), whose sum is σ = 382448957184. Its totient is φ = 93082812032.

The previous prime is 202100999951. The next prime is 202100999999. The reversal of 202100999972 is 279999001202.

It is a happy number.

It is a super-3 number, since 3×202100999972³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202100999972.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31614608 + ... + 31620999.

It is an arithmetic number, because the mean of its divisors is an integer number (15935373216).

Almost surely, 2^202100999972 is an apocalyptic number.

It is an amenable number.

202100999972 is a deficient number, since it is larger than the sum of its proper divisors (180347957212).

202100999972 is a wasteful number, since it uses less digits than its factorization.

202100999972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63235675 (or 63235673 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 50.

The spelling of 202100999972 in words is "two hundred two billion, one hundred million, nine hundred ninety-nine thousand, nine hundred seventy-two".