2311021122312 has 512 divisors, whose sum is σ = 7385333760000. Its totient is φ = 587793024000.

The previous prime is 2311021122301. The next prime is 2311021122343. The reversal of 2311021122312 is 2132211201132.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 519211687 + ... + 519216137.

It is an arithmetic number, because the mean of its divisors is an integer number (14424480000).

Almost surely, 2^{2311021122312} 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 2311021122312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3692666880000).

2311021122312 is an abundant number, since it is smaller than the sum of its proper divisors (5074312637688).

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

2311021122312 is a wasteful number, since it uses less digits than its factorization.

2311021122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2311021122312 its reverse (2132211201132), we get a palindrome (4443232323444).

The spelling of 2311021122312 in words is "two trillion, three hundred eleven billion, twenty-one million, one hundred twenty-two thousand, three hundred twelve".