202100971 has 4 divisors (see below), whose sum is σ = 209070000. Its totient is φ = 195131944.

The previous prime is 202100963. The next prime is 202100999. The reversal of 202100971 is 179001202.

202100971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202100971 - 2³ = 202100963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202101971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3484471 + ... + 3484528.

It is an arithmetic number, because the mean of its divisors is an integer number (52267500).

Almost surely, 2^202100971 is an apocalyptic number.

202100971 is a deficient number, since it is larger than the sum of its proper divisors (6969029).

202100971 is an equidigital number, since it uses as much as digits as its factorization.

202100971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969028.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 202100971 is about 14216.2221071563. Note that the first 3 decimals coincide. The cubic root of 202100971 is about 586.8441775528.

The spelling of 202100971 in words is "two hundred two million, one hundred thousand, nine hundred seventy-one".