11311222356 has 72 divisors (see below), whose sum is σ = 32896281600. Its totient is φ = 3210077376.

The previous prime is 11311222343. The next prime is 11311222547. The reversal of 11311222356 is 65322211311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113076 + ... + 188171.

It is an arithmetic number, because the mean of its divisors is an integer number (456892800).

Almost surely, 2^11311222356 is an apocalyptic number.

It is an amenable number.

11311222356 is an abundant number, since it is smaller than the sum of its proper divisors (21585059244).

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

11311222356 is a wasteful number, since it uses less digits than its factorization.

11311222356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301413 (or 301408 counting only the distinct ones).

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

Adding to 11311222356 its reverse (65322211311), we get a palindrome (76633433667).

The spelling of 11311222356 in words is "eleven billion, three hundred eleven million, two hundred twenty-two thousand, three hundred fifty-six".