21113022099 has 32 divisors (see below), whose sum is σ = 31410892800. Its totient is φ = 12526577280.

The previous prime is 21113022089. The next prime is 21113022193. The reversal of 21113022099 is 99022031112.

It is not a de Polignac number, because 21113022099 - 2⁴ = 21113022083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113022019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292762 + ... + 357680.

It is an arithmetic number, because the mean of its divisors is an integer number (981590400).

Almost surely, 2^21113022099 is an apocalyptic number.

21113022099 is a deficient number, since it is larger than the sum of its proper divisors (10297870701).

21113022099 is a wasteful number, since it uses less digits than its factorization.

21113022099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65235.

The product of its (nonzero) digits is 1944, while the sum is 30.

The spelling of 21113022099 in words is "twenty-one billion, one hundred thirteen million, twenty-two thousand, ninety-nine".