21131422131233 has 32 divisors (see below), whose sum is σ = 22568068005120. Its totient is φ = 19717095731200.

The previous prime is 21131422131229. The next prime is 21131422131247. The reversal of 21131422131233 is 33213122413112.

It is a cyclic number.

It is not a de Polignac number, because 21131422131233 - 2² = 21131422131229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21131422131196 and 21131422131205.

It is not an unprimeable number, because it can be changed into a prime (21131422131223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1744518185 + ... + 1744530297.

It is an arithmetic number, because the mean of its divisors is an integer number (705252125160).

Almost surely, 2^{21131422131233} is an apocalyptic number.

It is an amenable number.

21131422131233 is a deficient number, since it is larger than the sum of its proper divisors (1436645873887).

21131422131233 is a wasteful number, since it uses less digits than its factorization.

21131422131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14137.

The product of its digits is 5184, while the sum is 29.

Adding to 21131422131233 its reverse (33213122413112), we get a palindrome (54344544544345).

The spelling of 21131422131233 in words is "twenty-one trillion, one hundred thirty-one billion, four hundred twenty-two million, one hundred thirty-one thousand, two hundred thirty-three".