3122202031221 has 128 divisors (see below), whose sum is σ = 5522263326720. Its totient is φ = 1522416549888.

The previous prime is 3122202031213. The next prime is 3122202031231. The reversal of 3122202031221 is 1221302022213.

It is not a de Polignac number, because 3122202031221 - 2³ = 3122202031213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122202031231) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 70739266 + ... + 70783388.

It is an arithmetic number, because the mean of its divisors is an integer number (43142682240).

Almost surely, 2^{3122202031221} is an apocalyptic number.

It is an amenable number.

3122202031221 is a deficient number, since it is larger than the sum of its proper divisors (2400061295499).

3122202031221 is a wasteful number, since it uses less digits than its factorization.

3122202031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44435.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 3122202031221 its reverse (1221302022213), we get a palindrome (4343504053434).

The spelling of 3122202031221 in words is "three trillion, one hundred twenty-two billion, two hundred two million, thirty-one thousand, two hundred twenty-one".