21313011199 has 2 divisors, whose sum is σ = 21313011200. Its totient is φ = 21313011198.

The previous prime is 21313011193. The next prime is 21313011229. The reversal of 21313011199 is 99111031312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21313011199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21313011199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21313011193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656505599 + 10656505600.

It is an arithmetic number, because the mean of its divisors is an integer number (10656505600).

Almost surely, 2^21313011199 is an apocalyptic number.

21313011199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313011199 is an equidigital number, since it uses as much as digits as its factorization.

21313011199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 31.

The spelling of 21313011199 in words is "twenty-one billion, three hundred thirteen million, eleven thousand, one hundred ninety-nine".