12982428921 has 64 divisors (see below), whose sum is σ = 22205952000. Its totient is φ = 6743407440.

The previous prime is 12982428919. The next prime is 12982428931.

12982428921 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12982428921 - 2¹ = 12982428919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12982428931) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1364860 + ... + 1374338.

It is an arithmetic number, because the mean of its divisors is an integer number (346968000).

Almost surely, 2^12982428921 is an apocalyptic number.

12982428921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12982428921 is a deficient number, since it is larger than the sum of its proper divisors (9223523079).

12982428921 is an frugal number, since it uses more digits than its factorization.

12982428921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536 (or 9500 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The spelling of 12982428921 in words is "twelve billion, nine hundred eighty-two million, four hundred twenty-eight thousand, nine hundred twenty-one".