2121103100 has 36 divisors (see below), whose sum is σ = 4680820200. Its totient is φ = 834058560.

The previous prime is 2121103093. The next prime is 2121103139. The reversal of 2121103100 is 13011212.

It is a super-2 number, since 2×2121103100² = 8998156721659220000, which contains 22 as substring.

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, 173855 + ... + 185654.

Almost surely, 2^2121103100 is an apocalyptic number.

2121103100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121103100 is an abundant number, since it is smaller than the sum of its proper divisors (2559717100).

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

2121103100 is a wasteful number, since it uses less digits than its factorization.

2121103100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359582 (or 359575 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2121103100 is about 46055.4350755695. The cubic root of 2121103100 is about 1284.8544299562.

Adding to 2121103100 its reverse (13011212), we get a palindrome (2134114312).

The spelling of 2121103100 in words is "two billion, one hundred twenty-one million, one hundred three thousand, one hundred".