2121221122202 has 64 divisors (see below), whose sum is σ = 4264356499200. Its totient is φ = 767584097280.

The previous prime is 2121221122193. The next prime is 2121221122283. The reversal of 2121221122202 is 2022211221212.

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, 10475999 + ... + 10676562.

It is an arithmetic number, because the mean of its divisors is an integer number (66630570300).

Almost surely, 2^{2121221122202} is an apocalyptic number.

2121221122202 is an abundant number, since it is smaller than the sum of its proper divisors (2143135376998).

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

2121221122202 is a wasteful number, since it uses less digits than its factorization.

2121221122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21152631.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2121221122202 its reverse (2022211221212), we get a palindrome (4143432343414).

The spelling of 2121221122202 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred two".