2120103100 has 18 divisors (see below), whose sum is σ = 4600623944. Its totient is φ = 848041200.

The previous prime is 2120103091. The next prime is 2120103103. The reversal of 2120103100 is 13010212.

It is a super-2 number, since 2×2120103100² = 8989674309259220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120103103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10600416 + ... + 10600615.

Almost surely, 2^2120103100 is an apocalyptic number.

2120103100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120103100 is an abundant number, since it is smaller than the sum of its proper divisors (2480520844).

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

2120103100 is a wasteful number, since it uses less digits than its factorization.

2120103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201045 (or 21201038 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2120103100 is about 46044.5773137294. The cubic root of 2120103100 is about 1284.6524821428.

Adding to 2120103100 its reverse (13010212), we get a palindrome (2133113312).

The spelling of 2120103100 in words is "two billion, one hundred twenty million, one hundred three thousand, one hundred".