21230326404099 has 16 divisors (see below), whose sum is σ = 32536898704800. Its totient is φ = 13665497455008.

The previous prime is 21230326404083. The next prime is 21230326404139. The reversal of 21230326404099 is 99040462303212.

21230326404099 is a `hidden beast` number, since 2 + 1 + 230 + 3 + 2 + 6 + 4 + 0 + 409 + 9 = 666.

It is not a de Polignac number, because 21230326404099 - 2⁴ = 21230326404083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230326404029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13557040344 + ... + 13557041909.

It is an arithmetic number, because the mean of its divisors is an integer number (2033556169050).

Almost surely, 2^{21230326404099} is an apocalyptic number.

21230326404099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21230326404099 is a deficient number, since it is larger than the sum of its proper divisors (11306572300701).

21230326404099 is a wasteful number, since it uses less digits than its factorization.

21230326404099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27114082291 (or 27114082285 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 21230326404099 in words is "twenty-one trillion, two hundred thirty billion, three hundred twenty-six million, four hundred four thousand, ninety-nine".