2075721100 has 36 divisors (see below), whose sum is σ = 4508589904. Its totient is φ = 829500480.

The previous prime is 2075721091. The next prime is 2075721119. The reversal of 2075721100 is 11275702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 102409 + ... + 120991.

Almost surely, 2^2075721100 is an apocalyptic number.

2075721100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2075721100 is an abundant number, since it is smaller than the sum of its proper divisors (2432868804).

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

2075721100 is a wasteful number, since it uses less digits than its factorization.

2075721100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19714 (or 19707 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 2075721100 is about 45560.0823089687. The cubic root of 2075721100 is about 1275.6249352147.

Adding to 2075721100 its reverse (11275702), we get a palindrome (2086996802).

The spelling of 2075721100 in words is "two billion, seventy-five million, seven hundred twenty-one thousand, one hundred".