12099921023 has 16 divisors (see below), whose sum is σ = 12666931200. Its totient is φ = 11544543840.

The previous prime is 12099921019. The next prime is 12099921049. The reversal of 12099921023 is 32012999021.

It is not a de Polignac number, because 12099921023 - 2² = 12099921019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099921073) 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, 1305038 + ... + 1314276.

It is an arithmetic number, because the mean of its divisors is an integer number (791683200).

Almost surely, 2^12099921023 is an apocalyptic number.

12099921023 is a deficient number, since it is larger than the sum of its proper divisors (567010177).

12099921023 is an equidigital number, since it uses as much as digits as its factorization.

12099921023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9862.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 12099921023 in words is "twelve billion, ninety-nine million, nine hundred twenty-one thousand, twenty-three".