113313221440 has 84 divisors (see below), whose sum is σ = 284776269156. Its totient is φ = 42939703296.

The previous prime is 113313221419. The next prime is 113313221443. The reversal of 113313221440 is 44122313311.

It can be written as a sum of positive squares in 2 ways, for example, as 22461616384 + 90851605056 = 149872^2 + 301416^2 .

It is a super-2 number, since 2×113313221440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113313221443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374929 + ... + 605968.

Almost surely, 2^113313221440 is an apocalyptic number.

113313221440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113313221440 is an abundant number, since it is smaller than the sum of its proper divisors (171463047716).

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

113313221440 is an equidigital number, since it uses as much as digits as its factorization.

113313221440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980952 (or 980923 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 113313221440 its reverse (44122313311), we get a palindrome (157435534751).

The spelling of 113313221440 in words is "one hundred thirteen billion, three hundred thirteen million, two hundred twenty-one thousand, four hundred forty".