3221611056 has 100 divisors (see below), whose sum is σ = 9477366624. Its totient is φ = 1056240000.

The previous prime is 3221611037. The next prime is 3221611091. The reversal of 3221611056 is 6501161223.

It is a super-3 number, since 3×3221611056³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58681 + ... + 99431.

Almost surely, 2^3221611056 is an apocalyptic number.

3221611056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221611056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4738683312).

3221611056 is an abundant number, since it is smaller than the sum of its proper divisors (6255755568).

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

3221611056 is a wasteful number, since it uses less digits than its factorization.

3221611056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40832 (or 40817 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3221611056 is about 56759.2376270154. The cubic root of 3221611056 is about 1476.9224850058.

Adding to 3221611056 its reverse (6501161223), we get a palindrome (9722772279).

The spelling of 3221611056 in words is "three billion, two hundred twenty-one million, six hundred eleven thousand, fifty-six".