21310032221331 has 8 divisors (see below), whose sum is σ = 32472430051584. Its totient is φ = 12177161269320.

The previous prime is 21310032221299. The next prime is 21310032221383. The reversal of 21310032221331 is 13312223001312.

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

It is not a de Polignac number, because 21310032221331 - 2⁵ = 21310032221299 is a prime.

It is a super-2 number, since 2×21310032221331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21310032225331) 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, 507381719535 + ... + 507381719576.

It is an arithmetic number, because the mean of its divisors is an integer number (4059053756448).

Almost surely, 2^{21310032221331} is an apocalyptic number.

21310032221331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21310032221331 is a deficient number, since it is larger than the sum of its proper divisors (11162397830253).

21310032221331 is a wasteful number, since it uses less digits than its factorization.

21310032221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014763439121.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21310032221331 its reverse (13312223001312), we get a palindrome (34622255222643).

The spelling of 21310032221331 in words is "twenty-one trillion, three hundred ten billion, thirty-two million, two hundred twenty-one thousand, three hundred thirty-one".