2120002331100 has 144 divisors (see below), whose sum is σ = 6406429545600. Its totient is φ = 540731531520.

The previous prime is 2120002331081. The next prime is 2120002331113. The reversal of 2120002331100 is 11332000212.

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 2120002331100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 963670 + ... + 2273469.

Almost surely, 2^{2120002331100} is an apocalyptic number.

2120002331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120002331100 is an abundant number, since it is smaller than the sum of its proper divisors (4286427214500).

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

2120002331100 is a wasteful number, since it uses less digits than its factorization.

2120002331100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237252 (or 3237245 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2120002331100 its reverse (11332000212), we get a palindrome (2131334331312).

The spelling of 2120002331100 in words is "two trillion, one hundred twenty billion, two million, three hundred thirty-one thousand, one hundred".