2121102202100 has 36 divisors (see below), whose sum is σ = 5260333462944. Its totient is φ = 727235040480.

The previous prime is 2121102202003. The next prime is 2121102202103. The reversal of 2121102202100 is 12022011212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121102202103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1515072302 + ... + 1515073701.

Almost surely, 2^{2121102202100} is an apocalyptic number.

2121102202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121102202100 is an abundant number, since it is smaller than the sum of its proper divisors (3139231260844).

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

2121102202100 is a wasteful number, since it uses less digits than its factorization.

2121102202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030146024 (or 3030146017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121102202100 its reverse (12022011212), we get a palindrome (2133124213312).

The spelling of 2121102202100 in words is "two trillion, one hundred twenty-one billion, one hundred two million, two hundred two thousand, one hundred".