3231221222 has 4 divisors (see below), whose sum is σ = 4846831836. Its totient is φ = 1615610610.

The previous prime is 3231221219. The next prime is 3231221243. The reversal of 3231221222 is 2221221323.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221221323 = 17891 ⋅124153.

It is a junction number, because it is equal to n+sod(n) for n = 3231221194 and 3231221203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807805304 + ... + 807805307.

It is an arithmetic number, because the mean of its divisors is an integer number (1211707959).

Almost surely, 2^3231221222 is an apocalyptic number.

3231221222 is a deficient number, since it is larger than the sum of its proper divisors (1615610614).

3231221222 is a wasteful number, since it uses less digits than its factorization.

3231221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615610613.

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

The square root of 3231221222 is about 56843.8318729482. The cubic root of 3231221222 is about 1478.3895957317.

Adding to 3231221222 its reverse (2221221323), we get a palindrome (5452442545).

The spelling of 3231221222 in words is "three billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred twenty-two".