21132211301 has 4 divisors (see below), whose sum is σ = 22375282572. Its totient is φ = 19889140032.

The previous prime is 21132211241. The next prime is 21132211333. The reversal of 21132211301 is 10311223112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18304737025 + 2827474276 = 135295^2 + 53174^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132211301 - 2⁶ = 21132211237 is a prime.

It is a super-2 number, since 2×21132211301² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1243071253 = 21132211301 / (2 + 1 + 1 + 3 + 2 + 2 + 1 + 1 + 3 + 0 + 1).

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 21132211301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132211351) 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, 621535610 + ... + 621535643.

It is an arithmetic number, because the mean of its divisors is an integer number (5593820643).

Almost surely, 2^21132211301 is an apocalyptic number.

It is an amenable number.

21132211301 is a deficient number, since it is larger than the sum of its proper divisors (1243071271).

21132211301 is a wasteful number, since it uses less digits than its factorization.

21132211301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243071270.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21132211301 its reverse (10311223112), we get a palindrome (31443434413).

The spelling of 21132211301 in words is "twenty-one billion, one hundred thirty-two million, two hundred eleven thousand, three hundred one".