111512232240 has 80 divisors (see below), whose sum is σ = 345747343968. Its totient is φ = 29731483648.

The previous prime is 111512232217. The next prime is 111512232253. The reversal of 111512232240 is 42232215111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 111512232240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479304 + ... + 1552856.

Almost surely, 2^111512232240 is an apocalyptic number.

111512232240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111512232240 is an abundant number, since it is smaller than the sum of its proper divisors (234235111728).

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

111512232240 is a wasteful number, since it uses less digits than its factorization.

111512232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79886 (or 79880 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 111512232240 its reverse (42232215111), we get a palindrome (153744447351).

The spelling of 111512232240 in words is "one hundred eleven billion, five hundred twelve million, two hundred thirty-two thousand, two hundred forty".