21332302331 has 8 divisors (see below), whose sum is σ = 21836749824. Its totient is φ = 20829961960.

The previous prime is 21332302261. The next prime is 21332302333. The reversal of 21332302331 is 13320323312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21332302331 - 2²² = 21328108027 is a prime.

It is a super-2 number, since 2×21332302331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21332302297 and 21332302306.

It is not an unprimeable number, because it can be changed into a prime (21332302333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506285 + ... + 546798.

It is an arithmetic number, because the mean of its divisors is an integer number (2729593728).

Almost surely, 2^21332302331 is an apocalyptic number.

21332302331 is a deficient number, since it is larger than the sum of its proper divisors (504447493).

21332302331 is a wasteful number, since it uses less digits than its factorization.

21332302331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053561.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21332302331 its reverse (13320323312), we get a palindrome (34652625643).

The spelling of 21332302331 in words is "twenty-one billion, three hundred thirty-two million, three hundred two thousand, three hundred thirty-one".