21132310201 has 4 divisors (see below), whose sum is σ = 21386916432. Its totient is φ = 20877703972.

The previous prime is 21132310193. The next prime is 21132310217. The reversal of 21132310201 is 10201323112.

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 21132310201 - 2³ = 21132310193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132310301) 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, 127302991 + ... + 127303156.

It is an arithmetic number, because the mean of its divisors is an integer number (5346729108).

Almost surely, 2^21132310201 is an apocalyptic number.

It is an amenable number.

21132310201 is a deficient number, since it is larger than the sum of its proper divisors (254606231).

21132310201 is an equidigital number, since it uses as much as digits as its factorization.

21132310201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254606230.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21132310201 its reverse (10201323112), we get a palindrome (31333633313).

The spelling of 21132310201 in words is "twenty-one billion, one hundred thirty-two million, three hundred ten thousand, two hundred one".