21202131199 has 2 divisors, whose sum is σ = 21202131200. Its totient is φ = 21202131198.

The previous prime is 21202131163. The next prime is 21202131211. The reversal of 21202131199 is 99113120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202131199 - 2¹⁵ = 21202098431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21202131199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202101199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601065599 + 10601065600.

It is an arithmetic number, because the mean of its divisors is an integer number (10601065600).

Almost surely, 2^21202131199 is an apocalyptic number.

21202131199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202131199 is an equidigital number, since it uses as much as digits as its factorization.

21202131199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 21202131199 in words is "twenty-one billion, two hundred two million, one hundred thirty-one thousand, one hundred ninety-nine".