3111220000000 has 576 divisors, whose sum is σ = 9025514394624. Its totient is φ = 1048320000000.

The previous prime is 3111219999991. The next prime is 3111220000051. The reversal of 3111220000000 is 221113.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9939999844 + ... + 9940000156.

It is an arithmetic number, because the mean of its divisors is an integer number (15669295824).

Almost surely, 2^{3111220000000} 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 3111220000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4512757197312).

3111220000000 is an abundant number, since it is smaller than the sum of its proper divisors (5914294394624).

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

3111220000000 is an frugal number, since it uses more digits than its factorization.

3111220000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 3111220000000 its reverse (221113), we get a palindrome (3111220221113).

The spelling of 3111220000000 in words is "three trillion, one hundred eleven billion, two hundred twenty million", and thus it is an aban number.