202110212109 has 32 divisors (see below), whose sum is σ = 295822606464. Its totient is φ = 121992940800.

The previous prime is 202110212089. The next prime is 202110212123. The reversal of 202110212109 is 901212011202.

It is not a de Polignac number, because 202110212109 - 2⁷ = 202110211981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110212509) 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, 181707 + ... + 661239.

It is an arithmetic number, because the mean of its divisors is an integer number (9244456452).

Almost surely, 2^202110212109 is an apocalyptic number.

It is an amenable number.

202110212109 is a deficient number, since it is larger than the sum of its proper divisors (93712394355).

202110212109 is a wasteful number, since it uses less digits than its factorization.

202110212109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479757.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 202110212109 in words is "two hundred two billion, one hundred ten million, two hundred twelve thousand, one hundred nine".