2102021112400 has 60 divisors (see below), whose sum is σ = 5509206254304. Its totient is φ = 764371312000.

The previous prime is 2102021112343. The next prime is 2102021112481. The reversal of 2102021112400 is 42111202012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238861636 + ... + 238870435.

Almost surely, 2^{2102021112400} is an apocalyptic number.

2102021112400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102021112400 is an abundant number, since it is smaller than the sum of its proper divisors (3407185141904).

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

2102021112400 is a wasteful number, since it uses less digits than its factorization.

2102021112400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477732100 (or 477732089 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102021112400 its reverse (42111202012), we get a palindrome (2144132314412).

The spelling of 2102021112400 in words is "two trillion, one hundred two billion, twenty-one million, one hundred twelve thousand, four hundred".