2121045232400 has 120 divisors (see below), whose sum is σ = 5369050108800. Its totient is φ = 803009548800.

The previous prime is 2121045232399. The next prime is 2121045232433. The reversal of 2121045232400 is 42325401212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121045232400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7993865 + ... + 8254935.

It is an arithmetic number, because the mean of its divisors is an integer number (44742084240).

Almost surely, 2^{2121045232400} is an apocalyptic number.

2121045232400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121045232400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2684525054400).

2121045232400 is an abundant number, since it is smaller than the sum of its proper divisors (3248004876400).

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

2121045232400 is a wasteful number, since it uses less digits than its factorization.

2121045232400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262177 (or 262166 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The spelling of 2121045232400 in words is "two trillion, one hundred twenty-one billion, forty-five million, two hundred thirty-two thousand, four hundred".