21913714099 has 2 divisors, whose sum is σ = 21913714100. Its totient is φ = 21913714098.

The previous prime is 21913714079. The next prime is 21913714103. The reversal of 21913714099 is 99041731912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21913714099 - 2²⁷ = 21779496371 is a prime.

It is a super-2 number, since 2×21913714099² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21913714079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10956857049 + 10956857050.

It is an arithmetic number, because the mean of its divisors is an integer number (10956857050).

Almost surely, 2^21913714099 is an apocalyptic number.

21913714099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21913714099 is an equidigital number, since it uses as much as digits as its factorization.

21913714099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 21913714099 in words is "twenty-one billion, nine hundred thirteen million, seven hundred fourteen thousand, ninety-nine".