2125021200 has 60 divisors (see below), whose sum is σ = 6807155088. Its totient is φ = 566672000.

The previous prime is 2125021187. The next prime is 2125021211. The reversal of 2125021200 is 21205212.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2125021200.

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, 884226 + ... + 886625.

Almost surely, 2^2125021200 is an apocalyptic number.

2125021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125021200 is an abundant number, since it is smaller than the sum of its proper divisors (4682133888).

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

2125021200 is a wasteful number, since it uses less digits than its factorization.

2125021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770872 (or 1770861 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2125021200 is about 46097.9522321762. The cubic root of 2125021200 is about 1285.6450707008.

Adding to 2125021200 its reverse (21205212), we get a palindrome (2146226412).

The spelling of 2125021200 in words is "two billion, one hundred twenty-five million, twenty-one thousand, two hundred".