11312221464 has 96 divisors (see below), whose sum is σ = 32593944240. Its totient is φ = 3532032000.

The previous prime is 11312221457. The next prime is 11312221471. The reversal of 11312221464 is 46412221311.

It is an interprime number because it is at equal distance from previous prime (11312221457) and next prime (11312221471).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236364 + ... + 280164.

Almost surely, 2^11312221464 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 11312221464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16296972120).

11312221464 is an abundant number, since it is smaller than the sum of its proper divisors (21281722776).

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

11312221464 is a wasteful number, since it uses less digits than its factorization.

11312221464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44041 (or 44034 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 11312221464 its reverse (46412221311), we get a palindrome (57724442775).

The spelling of 11312221464 in words is "eleven billion, three hundred twelve million, two hundred twenty-one thousand, four hundred sixty-four".