111132221312 has 64 divisors (see below), whose sum is σ = 254223853440. Its totient is φ = 47402288640.

The previous prime is 111132221311. The next prime is 111132221383. The reversal of 111132221312 is 213122231111.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×111132221312² (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 (111132221311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104858 + ... + 482969.

It is an arithmetic number, because the mean of its divisors is an integer number (3972247710).

Almost surely, 2^111132221312 is an apocalyptic number.

It is an amenable number.

111132221312 is an abundant number, since it is smaller than the sum of its proper divisors (143091632128).

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

111132221312 is an equidigital number, since it uses as much as digits as its factorization.

111132221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588059 (or 588047 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 111132221312 its reverse (213122231111), we get a palindrome (324254452423).

The spelling of 111132221312 in words is "one hundred eleven billion, one hundred thirty-two million, two hundred twenty-one thousand, three hundred twelve".