3221222151 has 16 divisors (see below), whose sum is σ = 5121944064. Its totient is φ = 1760667744.

The previous prime is 3221222143. The next prime is 3221222153. The reversal of 3221222151 is 1512221223.

It is not a de Polignac number, because 3221222151 - 2³ = 3221222143 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 (3221222153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3334116 + ... + 3335081.

It is an arithmetic number, because the mean of its divisors is an integer number (320121504).

Almost surely, 2^3221222151 is an apocalyptic number.

3221222151 is a deficient number, since it is larger than the sum of its proper divisors (1900721913).

3221222151 is a wasteful number, since it uses less digits than its factorization.

3221222151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669230.

The product of its digits is 480, while the sum is 21.

The square root of 3221222151 is about 56755.8116055087. The cubic root of 3221222151 is about 1476.8630524586.

Adding to 3221222151 its reverse (1512221223), we get a palindrome (4733443374).

The spelling of 3221222151 in words is "three billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred fifty-one".