2120355100 has 36 divisors (see below), whose sum is σ = 4687996824. Its totient is φ = 832137280.

The previous prime is 2120355077. The next prime is 2120355161. The reversal of 2120355100 is 15530212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194734 + ... + 205333.

It is an arithmetic number, because the mean of its divisors is an integer number (130222134).

Almost surely, 2^2120355100 is an apocalyptic number.

2120355100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120355100 is an abundant number, since it is smaller than the sum of its proper divisors (2567641724).

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

2120355100 is a wasteful number, since it uses less digits than its factorization.

2120355100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400134 (or 400127 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 2120355100 is about 46047.3137110082. The cubic root of 2120355100 is about 1284.7033789757.

Adding to 2120355100 its reverse (15530212), we get a palindrome (2135885312).

The spelling of 2120355100 in words is "two billion, one hundred twenty million, three hundred fifty-five thousand, one hundred".