2120200001100 has 54 divisors (see below), whose sum is σ = 6645649117380. Its totient is φ = 565386666720.

The previous prime is 2120200001081. The next prime is 2120200001107. The reversal of 2120200001100 is 11000020212.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2120200001107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1177887990 + ... + 1177889789.

Almost surely, 2^{2120200001100} is an apocalyptic number.

2120200001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120200001100 is an abundant number, since it is smaller than the sum of its proper divisors (4525449116280).

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

2120200001100 is a wasteful number, since it uses less digits than its factorization.

2120200001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355777799 (or 2355777789 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2120200001100 its reverse (11000020212), we get a palindrome (2131200021312).

The spelling of 2120200001100 in words is "two trillion, one hundred twenty billion, two hundred million, one thousand, one hundred".