12921842324 has 24 divisors (see below), whose sum is σ = 24028657128. Its totient is φ = 6059217920.

The previous prime is 12921842321. The next prime is 12921842327. The reversal of 12921842324 is 42324812921.

It is an interprime number because it is at equal distance from previous prime (12921842321) and next prime (12921842327).

It can be written as a sum of positive squares in 4 ways, for example, as 2267473924 + 10654368400 = 47618^2 + 103220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12921842321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319019 + ... + 357234.

It is an arithmetic number, because the mean of its divisors is an integer number (1001194047).

Almost surely, 2^12921842324 is an apocalyptic number.

It is an amenable number.

12921842324 is a deficient number, since it is larger than the sum of its proper divisors (11106814804).

12921842324 is a wasteful number, since it uses less digits than its factorization.

12921842324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676555 (or 676553 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The spelling of 12921842324 in words is "twelve billion, nine hundred twenty-one million, eight hundred forty-two thousand, three hundred twenty-four".