21321132032101 has 4 divisors (see below), whose sum is σ = 23259416762304. Its totient is φ = 19382847301900.

The previous prime is 21321132032093. The next prime is 21321132032147. The reversal of 21321132032101 is 10123023112312.

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 21321132032101 - 2³ = 21321132032093 is a prime.

It is a super-2 number, since 2×21321132032101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321132032171) 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, 969142365085 + ... + 969142365106.

It is an arithmetic number, because the mean of its divisors is an integer number (5814854190576).

Almost surely, 2^{21321132032101} is an apocalyptic number.

It is an amenable number.

21321132032101 is a deficient number, since it is larger than the sum of its proper divisors (1938284730203).

21321132032101 is a wasteful number, since it uses less digits than its factorization.

21321132032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938284730202.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21321132032101 its reverse (10123023112312), we get a palindrome (31444155144413).

The spelling of 21321132032101 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-two million, thirty-two thousand, one hundred one".