2120234100 has 72 divisors (see below), whose sum is σ = 6154793568. Its totient is φ = 563529600.

The previous prime is 2120234069. The next prime is 2120234113. The reversal of 2120234100 is 14320212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2120234100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80590 + ... + 103610.

It is an arithmetic number, because the mean of its divisors is an integer number (85483244).

Almost surely, 2^2120234100 is an apocalyptic number.

2120234100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120234100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3077396784).

2120234100 is an abundant number, since it is smaller than the sum of its proper divisors (4034559468).

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

2120234100 is a wasteful number, since it uses less digits than its factorization.

2120234100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23345 (or 23338 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2120234100 is about 46045.9998262607. Note that the first 3 decimals coincide. The cubic root of 2120234100 is about 1284.6789409204.

Adding to 2120234100 its reverse (14320212), we get a palindrome (2134554312).

The spelling of 2120234100 in words is "two billion, one hundred twenty million, two hundred thirty-four thousand, one hundred".