2421340821172 has 48 divisors (see below), whose sum is σ = 5489679610240. Its totient is φ = 907477644672.

The previous prime is 2421340821167. The next prime is 2421340821247. The reversal of 2421340821172 is 2711280431242.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175046643 + ... + 175060474.

Almost surely, 2^{2421340821172} is an apocalyptic number.

It is an amenable number.

2421340821172 is an abundant number, since it is smaller than the sum of its proper divisors (3068338789068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2421340821172 is a wasteful number, since it uses less digits than its factorization.

2421340821172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350107160 (or 350107158 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 2421340821172 in words is "two trillion, four hundred twenty-one billion, three hundred forty million, eight hundred twenty-one thousand, one hundred seventy-two".