21131200131299 has 2 divisors, whose sum is σ = 21131200131300. Its totient is φ = 21131200131298.

The previous prime is 21131200131289. The next prime is 21131200131323. The reversal of 21131200131299 is 99213100213112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21131200131299 - 2¹² = 21131200127203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21131200131229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565600065649 + 10565600065650.

It is an arithmetic number, because the mean of its divisors is an integer number (10565600065650).

Almost surely, 2^{21131200131299} is an apocalyptic number.

21131200131299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21131200131299 is an equidigital number, since it uses as much as digits as its factorization.

21131200131299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 21131200131299 in words is "twenty-one trillion, one hundred thirty-one billion, two hundred million, one hundred thirty-one thousand, two hundred ninety-nine".