2102223022400 has 42 divisors (see below), whose sum is σ = 5172782528430. Its totient is φ = 840889208320.

The previous prime is 2102223022399. The next prime is 2102223022429. The reversal of 2102223022400 is 42203222012.

It can be written as a sum of positive squares in 3 ways, for example, as 606728829184 + 1495494193216 = 778928^2 + 1222904^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 656943095 + ... + 656946294.

Almost surely, 2^{2102223022400} is an apocalyptic number.

2102223022400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102223022400 is an abundant number, since it is smaller than the sum of its proper divisors (3070559506030).

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

2102223022400 is a wasteful number, since it uses less digits than its factorization.

2102223022400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313889411 (or 1313889396 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 2102223022400 its reverse (42203222012), we get a palindrome (2144426244412).

The spelling of 2102223022400 in words is "two trillion, one hundred two billion, two hundred twenty-three million, twenty-two thousand, four hundred".