3221126340 has 96 divisors (see below), whose sum is σ = 9644552064. Its totient is φ = 800409600.

The previous prime is 3221126267. The next prime is 3221126401. The reversal of 3221126340 is 436211223.

It is a self number, because there is not a number n which added to its sum of digits gives 3221126340.

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, 87387 + ... + 118653.

It is an arithmetic number, because the mean of its divisors is an integer number (100464084).

Almost surely, 2^3221126340 is an apocalyptic number.

3221126340 is a gapful number since it is divisible by the number (30) 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 3221126340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4822276032).

3221126340 is an abundant number, since it is smaller than the sum of its proper divisors (6423425724).

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

3221126340 is a wasteful number, since it uses less digits than its factorization.

3221126340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31397 (or 31395 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 3221126340 is about 56754.9675358906. The cubic root of 3221126340 is about 1476.8484098662.

Adding to 3221126340 its reverse (436211223), we get a palindrome (3657337563).

The spelling of 3221126340 in words is "three billion, two hundred twenty-one million, one hundred twenty-six thousand, three hundred forty".