2121121020200 has 96 divisors (see below), whose sum is σ = 6069669432960. Its totient is φ = 671299833600.

The previous prime is 2121121020199. The next prime is 2121121020229. The reversal of 2121121020200 is 20201211212.

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

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, 58254356 + ... + 58290755.

It is an arithmetic number, because the mean of its divisors is an integer number (63225723260).

Almost surely, 2^{2121121020200} is an apocalyptic number.

2121121020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121121020200 is an abundant number, since it is smaller than the sum of its proper divisors (3948548412760).

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

2121121020200 is a wasteful number, since it uses less digits than its factorization.

2121121020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116545147 (or 116545138 counting only the distinct ones).

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

Adding to 2121121020200 its reverse (20201211212), we get a palindrome (2141322231412).

The spelling of 2121121020200 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, two hundred".