21223100321099 has 6 divisors (see below), whose sum is σ = 22544954320644. Its totient is φ = 19974682654880.

The previous prime is 21223100321041. The next prime is 21223100321147. The reversal of 21223100321099 is 99012300132212.

It is a de Polignac number, because none of the positive numbers 2^k-21223100321099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223100321009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36718166357 + ... + 36718166934.

It is an arithmetic number, because the mean of its divisors is an integer number (3757492386774).

Almost surely, 2^{21223100321099} is an apocalyptic number.

21223100321099 is a deficient number, since it is larger than the sum of its proper divisors (1321853999545).

21223100321099 is an equidigital number, since it uses as much as digits as its factorization.

21223100321099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73436333325 (or 73436333308 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 21223100321099 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred million, three hundred twenty-one thousand, ninety-nine".