3221220140 has 24 divisors (see below), whose sum is σ = 6767811792. Its totient is φ = 1287869120.

The previous prime is 3221220083. The next prime is 3221220161. The reversal of 3221220140 is 410221223.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5207 + ... + 80433.

It is an arithmetic number, because the mean of its divisors is an integer number (281992158).

Almost surely, 2^3221220140 is an apocalyptic number.

It is an amenable number.

3221220140 is an abundant number, since it is smaller than the sum of its proper divisors (3546591652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221220140 is a wasteful number, since it uses less digits than its factorization.

3221220140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77377 (or 77375 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 3221220140 is about 56755.7938892586. The cubic root of 3221220140 is about 1476.8627451247.

Adding to 3221220140 its reverse (410221223), we get a palindrome (3631441363).

The spelling of 3221220140 in words is "three billion, two hundred twenty-one million, two hundred twenty thousand, one hundred forty".