21130592233 has 2 divisors, whose sum is σ = 21130592234. Its totient is φ = 21130592232.

The previous prime is 21130592213. The next prime is 21130592291. The reversal of 21130592233 is 33229503112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15458694889 + 5671897344 = 124333^2 + 75312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21130592233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21130592195 and 21130592204.

It is not a weakly prime, because it can be changed into another prime (21130592213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565296116 + 10565296117.

It is an arithmetic number, because the mean of its divisors is an integer number (10565296117).

Almost surely, 2^21130592233 is an apocalyptic number.

It is an amenable number.

21130592233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130592233 is an equidigital number, since it uses as much as digits as its factorization.

21130592233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 21130592233 in words is "twenty-one billion, one hundred thirty million, five hundred ninety-two thousand, two hundred thirty-three".