3321221232 has 160 divisors (see below), whose sum is σ = 10109765632. Its totient is φ = 919683072.

The previous prime is 3321221221. The next prime is 3321221243. The reversal of 3321221232 is 2321221233.

It is a happy number.

3321221232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3321221221) and next prime (3321221243).

It is a super-2 number, since 2×3321221232² = 22061020943775195648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3321221199 and 3321221208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5755728 + ... + 5756304.

Almost surely, 2^3321221232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3321221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5054882816).

3321221232 is an abundant number, since it is smaller than the sum of its proper divisors (6788544400).

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

3321221232 is a wasteful number, since it uses less digits than its factorization.

3321221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1089 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 3321221232 is about 57630.0375845791. The cubic root of 3321221232 is about 1491.9900786859.

Adding to 3321221232 its reverse (2321221233), we get a palindrome (5642442465).

Subtracting from 3321221232 its reverse (2321221233), we obtain a palindrome (999999999).

The spelling of 3321221232 in words is "three billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty-two".