2152105100 has 18 divisors (see below), whose sum is σ = 4670068284. Its totient is φ = 860842000.

The previous prime is 2152105061. The next prime is 2152105103. The reversal of 2152105100 is 15012512.

It is a super-2 number, since 2×2152105100² = 9263112722892020000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2152105103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10760426 + ... + 10760625.

It is an arithmetic number, because the mean of its divisors is an integer number (259448238).

Almost surely, 2^2152105100 is an apocalyptic number.

2152105100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152105100 is an abundant number, since it is smaller than the sum of its proper divisors (2517963184).

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

2152105100 is a wasteful number, since it uses less digits than its factorization.

2152105100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21521065 (or 21521058 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 2152105100 is about 46390.7868008293. The cubic root of 2152105100 is about 1291.0839796147.

Adding to 2152105100 its reverse (15012512), we get a palindrome (2167117612).

The spelling of 2152105100 in words is "two billion, one hundred fifty-two million, one hundred five thousand, one hundred".