2121220200210 has 64 divisors (see below), whose sum is σ = 5104520560512. Its totient is φ = 564148924416.

The previous prime is 2121220200167. The next prime is 2121220200251. The reversal of 2121220200210 is 120020221212.

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 2121220200210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144067909 + ... + 144082631.

It is an arithmetic number, because the mean of its divisors is an integer number (79758133758).

Almost surely, 2^{2121220200210} is an apocalyptic number.

2121220200210 is an abundant number, since it is smaller than the sum of its proper divisors (2983300360302).

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

2121220200210 is a wasteful number, since it uses less digits than its factorization.

2121220200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27227.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2121220200210 its reverse (120020221212), we get a palindrome (2241240421422).

The spelling of 2121220200210 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, two hundred ten".