2121220122200 has 48 divisors (see below), whose sum is σ = 4932235935000. Its totient is φ = 848419377920.

The previous prime is 2121220122187. The next prime is 2121220122211. The reversal of 2121220122200 is 22210221212.

It is a happy number.

It is a congruent number.

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, 2084876 + ... + 2930724.

Almost surely, 2^{2121220122200} is an apocalyptic number.

2121220122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121220122200 is an abundant number, since it is smaller than the sum of its proper divisors (2811015812800).

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

2121220122200 is a wasteful number, since it uses less digits than its factorization.

2121220122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858404 (or 858395 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2121220122200 its reverse (22210221212), we get a palindrome (2143430343412).

The spelling of 2121220122200 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, two hundred".