2120213100100 has 18 divisors (see below), whose sum is σ = 4600862427434. Its totient is φ = 848085240000.

The previous prime is 2120213100001. The next prime is 2120213100119. The reversal of 2120213100100 is 10013120212.

It can be written as a sum of positive squares in 3 ways, for example, as 529622973504 + 1590590126596 = 727752^2 + 1261186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10601065401 + ... + 10601065600.

Almost surely, 2^{2120213100100} is an apocalyptic number.

2120213100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120213100100 is an abundant number, since it is smaller than the sum of its proper divisors (2480649327334).

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

2120213100100 is a wasteful number, since it uses less digits than its factorization.

2120213100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202131015 (or 21202131008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2120213100100 its reverse (10013120212), we get a palindrome (2130226220312).

The spelling of 2120213100100 in words is "two trillion, one hundred twenty billion, two hundred thirteen million, one hundred thousand, one hundred".