109298431921 has 16 divisors (see below), whose sum is σ = 125216235648. Its totient is φ = 93456720000.

The previous prime is 109298431919. The next prime is 109298431961. The reversal of 109298431921 is 129134892901.

It is not a de Polignac number, because 109298431921 - 2¹ = 109298431919 is a prime.

It is a super-2 number, since 2×109298431921² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109298431961) 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, 12138421 + ... + 12147421.

It is an arithmetic number, because the mean of its divisors is an integer number (7826014728).

Almost surely, 2^109298431921 is an apocalyptic number.

It is an amenable number.

109298431921 is a deficient number, since it is larger than the sum of its proper divisors (15917803727).

109298431921 is an equidigital number, since it uses as much as digits as its factorization.

109298431921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13032.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 109298431921 in words is "one hundred nine billion, two hundred ninety-eight million, four hundred thirty-one thousand, nine hundred twenty-one".