12348888921 has 12 divisors (see below), whose sum is σ = 17841223972. Its totient is φ = 8230774176.

The previous prime is 12348888911. The next prime is 12348888943. The reversal of 12348888921 is 12988884321.

It can be written as a sum of positive squares in 2 ways, for example, as 7415793225 + 4933095696 = 86115^2 + 70236^2 .

It is not a de Polignac number, because 12348888921 - 2⁵ = 12348888889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12348888911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107866 + ... + 190611.

Almost surely, 2^12348888921 is an apocalyptic number.

It is an amenable number.

12348888921 is a deficient number, since it is larger than the sum of its proper divisors (5492335051).

12348888921 is a wasteful number, since it uses less digits than its factorization.

12348888921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303080 (or 303077 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 54.

The spelling of 12348888921 in words is "twelve billion, three hundred forty-eight million, eight hundred eighty-eight thousand, nine hundred twenty-one".