201322122123 has 4 divisors (see below), whose sum is σ = 268429496168. Its totient is φ = 134214748080.

The previous prime is 201322122109. The next prime is 201322122139. The reversal of 201322122123 is 321221223102.

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

It is not a de Polignac number, because 201322122123 - 2²⁹ = 200785251211 is a prime.

It is a super-2 number, since 2×201322122123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201322122123.

It is not an unprimeable number, because it can be changed into a prime (201322122163) 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, 33553687018 + ... + 33553687023.

It is an arithmetic number, because the mean of its divisors is an integer number (67107374042).

Almost surely, 2^201322122123 is an apocalyptic number.

201322122123 is a deficient number, since it is larger than the sum of its proper divisors (67107374045).

201322122123 is an equidigital number, since it uses as much as digits as its factorization.

201322122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67107374044.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201322122123 its reverse (321221223102), we get a palindrome (522543345225).

The spelling of 201322122123 in words is "two hundred one billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-three".