2120121202100 has 72 divisors (see below), whose sum is σ = 5237118427968. Its totient is φ = 737433452800.

The previous prime is 2120121202081. The next prime is 2120121202207. The reversal of 2120121202100 is 12021210212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41874329 + ... + 41924928.

It is an arithmetic number, because the mean of its divisors is an integer number (72737755944).

Almost surely, 2^{2120121202100} is an apocalyptic number.

2120121202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120121202100 is an abundant number, since it is smaller than the sum of its proper divisors (3116997225868).

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

2120121202100 is a wasteful number, since it uses less digits than its factorization.

2120121202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83799305 (or 83799298 counting only the distinct ones).

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

Adding to 2120121202100 its reverse (12021210212), we get a palindrome (2132142412312).

The spelling of 2120121202100 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred".