2120102210100 has 144 divisors (see below), whose sum is σ = 7011451238400. Its totient is φ = 484527054720.

The previous prime is 2120102210059. The next prime is 2120102210113. The reversal of 2120102210100 is 10122010212.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 15807121 + ... + 15940679.

It is an arithmetic number, because the mean of its divisors is an integer number (48690633600).

Almost surely, 2^{2120102210100} is an apocalyptic number.

2120102210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120102210100 is an abundant number, since it is smaller than the sum of its proper divisors (4891349028300).

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

2120102210100 is a wasteful number, since it uses less digits than its factorization.

2120102210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141142 (or 141135 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2120102210100 its reverse (10122010212), we get a palindrome (2130224220312).

The spelling of 2120102210100 in words is "two trillion, one hundred twenty billion, one hundred two million, two hundred ten thousand, one hundred".