21130592291 has 2 divisors, whose sum is σ = 21130592292. Its totient is φ = 21130592290.

The previous prime is 21130592233. The next prime is 21130592311. The reversal of 21130592291 is 19229503112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21130592291 is a prime.

It is not a weakly prime, because it can be changed into another prime (21130597291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565296145 + 10565296146.

It is an arithmetic number, because the mean of its divisors is an integer number (10565296146).

Almost surely, 2^21130592291 is an apocalyptic number.

21130592291 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130592291 is an equidigital number, since it uses as much as digits as its factorization.

21130592291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 21130592291 in words is "twenty-one billion, one hundred thirty million, five hundred ninety-two thousand, two hundred ninety-one".