111331122312 has 32 divisors (see below), whose sum is σ = 278354779200. Its totient is φ = 37106777664.

The previous prime is 111331122311. The next prime is 111331122379. The reversal of 111331122312 is 213221133111.

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

It is not an unprimeable number, because it can be changed into a prime (111331122311) 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 7 ways as a sum of consecutive naturals, for example, 34114 + ... + 473102.

It is an arithmetic number, because the mean of its divisors is an integer number (8698586850).

Almost surely, 2^111331122312 is an apocalyptic number.

111331122312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111331122312 is an abundant number, since it is smaller than the sum of its proper divisors (167023656888).

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

111331122312 is a wasteful number, since it uses less digits than its factorization.

111331122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449565 (or 449561 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 111331122312 its reverse (213221133111), we get a palindrome (324552255423).

The spelling of 111331122312 in words is "one hundred eleven billion, three hundred thirty-one million, one hundred twenty-two thousand, three hundred twelve".