202110122122109 has 4 divisors (see below), whose sum is σ = 202229080406400. Its totient is φ = 201991163837820.

The previous prime is 202110122122093. The next prime is 202110122122169. The reversal of 202110122122109 is 901221221011202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202110122122109 - 2⁴ = 202110122122093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110122122169) 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, 59479139597 + ... + 59479142994.

It is an arithmetic number, because the mean of its divisors is an integer number (50557270101600).

Almost surely, 2^{202110122122109} is an apocalyptic number.

It is an amenable number.

202110122122109 is a deficient number, since it is larger than the sum of its proper divisors (118958284291).

202110122122109 is a wasteful number, since it uses less digits than its factorization.

202110122122109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118958284290.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 202110122122109 in words is "two hundred two trillion, one hundred ten billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred nine".