3121322222 has 16 divisors (see below), whose sum is σ = 4715256912. Its totient is φ = 1549601280.

The previous prime is 3121322221. The next prime is 3121322231. The reversal of 3121322222 is 2222231213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3121322194 and 3121322203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121322221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201353 + ... + 216299.

It is an arithmetic number, because the mean of its divisors is an integer number (294703557).

Almost surely, 2^3121322222 is an apocalyptic number.

3121322222 is a deficient number, since it is larger than the sum of its proper divisors (1593934690).

3121322222 is a wasteful number, since it uses less digits than its factorization.

3121322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15683.

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

The square root of 3121322222 is about 55868.7947068845. The cubic root of 3121322222 is about 1461.4351032621.

Adding to 3121322222 its reverse (2222231213), we get a palindrome (5343553435).

It can be divided in two parts, 31213 and 22222, that added together give a palindrome (53435).

The spelling of 3121322222 in words is "three billion, one hundred twenty-one million, three hundred twenty-two thousand, two hundred twenty-two".