111221200131312 has 80 divisors (see below), whose sum is σ = 304225453137312. Its totient is φ = 34892609126400.

The previous prime is 111221200131277. The next prime is 111221200131317. The reversal of 111221200131312 is 213131002122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221200131317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99322438 + ... + 100435994.

Almost surely, 2^{111221200131312} is an apocalyptic number.

111221200131312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111221200131312 is an abundant number, since it is smaller than the sum of its proper divisors (193004253006000).

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

111221200131312 is a wasteful number, since it uses less digits than its factorization.

111221200131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235986 (or 1235980 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 111221200131312 its reverse (213131002122111), we get a palindrome (324352202253423).

The spelling of 111221200131312 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred million, one hundred thirty-one thousand, three hundred twelve".