21310112213331 has 8 divisors (see below), whose sum is σ = 28414853613504. Its totient is φ = 14206056144360.

The previous prime is 21310112213317. The next prime is 21310112213359. The reversal of 21310112213331 is 13331221101312.

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

It is not a de Polignac number, because 21310112213331 - 2²⁵ = 21310078658899 is a prime.

It is a super-2 number, since 2×21310112213331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21310112213371) 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, 171260241 + ... + 171384626.

It is an arithmetic number, because the mean of its divisors is an integer number (3551856701688).

Almost surely, 2^{21310112213331} is an apocalyptic number.

21310112213331 is a deficient number, since it is larger than the sum of its proper divisors (7104741400173).

21310112213331 is a wasteful number, since it uses less digits than its factorization.

21310112213331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342665601.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 21310112213331 its reverse (13331221101312), we get a palindrome (34641333314643).

The spelling of 21310112213331 in words is "twenty-one trillion, three hundred ten billion, one hundred twelve million, two hundred thirteen thousand, three hundred thirty-one".