201321123299 has 4 divisors (see below), whose sum is σ = 201323830080. Its totient is φ = 201318416520.

The previous prime is 201321123287. The next prime is 201321123307. The reversal of 201321123299 is 992321123102.

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 201321123299 - 2²⁰ = 201320074723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201321123239) 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, 1238579 + ... + 1391660.

It is an arithmetic number, because the mean of its divisors is an integer number (50330957520).

Almost surely, 2^201321123299 is an apocalyptic number.

201321123299 is a deficient number, since it is larger than the sum of its proper divisors (2706781).

201321123299 is an equidigital number, since it uses as much as digits as its factorization.

201321123299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706780.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 201321123299 in words is "two hundred one billion, three hundred twenty-one million, one hundred twenty-three thousand, two hundred ninety-nine".