2120113100 has 72 divisors (see below), whose sum is σ = 5534645760. Its totient is φ = 688633920.

The previous prime is 2120113091. The next prime is 2120113109. The reversal of 2120113100 is 13110212.

It is an interprime number because it is at equal distance from previous prime (2120113091) and next prime (2120113109).

It is a super-2 number, since 2×2120113100² = 8989759113583220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2120113109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66404 + ... + 93003.

It is an arithmetic number, because the mean of its divisors is an integer number (76870080).

Almost surely, 2^2120113100 is an apocalyptic number.

2120113100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120113100 is an abundant number, since it is smaller than the sum of its proper divisors (3414532660).

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

2120113100 is a wasteful number, since it uses less digits than its factorization.

2120113100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159447 (or 159440 counting only the distinct ones).

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

The square root of 2120113100 is about 46044.6859040215. The cubic root of 2120113100 is about 1284.6545019352.

Adding to 2120113100 its reverse (13110212), we get a palindrome (2133223312).

The spelling of 2120113100 in words is "two billion, one hundred twenty million, one hundred thirteen thousand, one hundred".