2121132020100 has 36 divisors (see below), whose sum is σ = 6137141979024. Its totient is φ = 565635205280.

The previous prime is 2121132020041. The next prime is 2121132020113. The reversal of 2121132020100 is 10202311212.

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 2121132020100.

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, 3535219734 + ... + 3535220333.

It is an arithmetic number, because the mean of its divisors is an integer number (170476166084).

Almost surely, 2^{2121132020100} is an apocalyptic number.

2121132020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121132020100 is an abundant number, since it is smaller than the sum of its proper divisors (4016009958924).

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

2121132020100 is a wasteful number, since it uses less digits than its factorization.

2121132020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070440084 (or 7070440077 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2121132020100 its reverse (10202311212), we get a palindrome (2131334331312).

The spelling of 2121132020100 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, twenty thousand, one hundred".