2152321100 has 36 divisors (see below), whose sum is σ = 4675367424. Its totient is φ = 860038080.

The previous prime is 2152321081. The next prime is 2152321147. The reversal of 2152321100 is 11232512.

It is a happy number.

It is a super-2 number, since 2×2152321100² = 9264972235010420000, which contains 22 as substring.

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, 90677 + ... + 111923.

Almost surely, 2^2152321100 is an apocalyptic number.

2152321100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152321100 is an abundant number, since it is smaller than the sum of its proper divisors (2523046324).

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

2152321100 is a wasteful number, since it uses less digits than its factorization.

2152321100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22274 (or 22267 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2152321100 is about 46393.1147908825. The cubic root of 2152321100 is about 1291.1271721785.

Adding to 2152321100 its reverse (11232512), we get a palindrome (2163553612).

The spelling of 2152321100 in words is "two billion, one hundred fifty-two million, three hundred twenty-one thousand, one hundred".