2202012122221 has 4 divisors (see below), whose sum is σ = 2202025211712. Its totient is φ = 2201999032732.

The previous prime is 2202012122213. The next prime is 2202012122237. The reversal of 2202012122221 is 1222212102022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2202012122221 - 2³ = 2202012122213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202012122021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6289075 + ... + 6629968.

It is an arithmetic number, because the mean of its divisors is an integer number (550506302928).

Almost surely, 2^{2202012122221} is an apocalyptic number.

It is an amenable number.

2202012122221 is a deficient number, since it is larger than the sum of its proper divisors (13089491).

2202012122221 is a wasteful number, since it uses less digits than its factorization.

2202012122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13089490.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2202012122221 its reverse (1222212102022), we get a palindrome (3424224224243).

The spelling of 2202012122221 in words is "two trillion, two hundred two billion, twelve million, one hundred twenty-two thousand, two hundred twenty-one".