3122322221 has 4 divisors (see below), whose sum is σ = 3305988252. Its totient is φ = 2938656192.

The previous prime is 3122322173. The next prime is 3122322277. The reversal of 3122322221 is 1222232213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2102222500 + 1020099721 = 45850^2 + 31939^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122322221 - 2⁶ = 3122322157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3122322193 and 3122322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122322521) 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, 91832990 + ... + 91833023.

It is an arithmetic number, because the mean of its divisors is an integer number (826497063).

Almost surely, 2^3122322221 is an apocalyptic number.

It is an amenable number.

3122322221 is a deficient number, since it is larger than the sum of its proper divisors (183666031).

3122322221 is a wasteful number, since it uses less digits than its factorization.

3122322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183666030.

The product of its digits is 576, while the sum is 20.

The square root of 3122322221 is about 55877.7435210120. The cubic root of 3122322221 is about 1461.5911565302.

Adding to 3122322221 its reverse (1222232213), we get a palindrome (4344554434).

The spelling of 3122322221 in words is "three billion, one hundred twenty-two million, three hundred twenty-two thousand, two hundred twenty-one".