3212211440 has 80 divisors (see below), whose sum is σ = 7874629920. Its totient is φ = 1215221760.

The previous prime is 3212211377. The next prime is 3212211493. The reversal of 3212211440 is 441122123.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155332 + ... + 1158108.

It is an arithmetic number, because the mean of its divisors is an integer number (98432874).

Almost surely, 2^3212211440 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 3212211440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3937314960).

3212211440 is an abundant number, since it is smaller than the sum of its proper divisors (4662418480).

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

3212211440 is a wasteful number, since it uses less digits than its factorization.

3212211440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570 (or 3564 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 3212211440 is about 56676.3746194126. The cubic root of 3212211440 is about 1475.4846921898.

Adding to 3212211440 its reverse (441122123), we get a palindrome (3653333563).

The spelling of 3212211440 in words is "three billion, two hundred twelve million, two hundred eleven thousand, four hundred forty".