111212332131 has 4 divisors (see below), whose sum is σ = 148283109512. Its totient is φ = 74141554752.

The previous prime is 111212332109. The next prime is 111212332163. The reversal of 111212332131 is 131233212111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111212332131 - 2⁶ = 111212332067 is a prime.

It is a super-2 number, since 2×111212332131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111212332098 and 111212332107.

It is not an unprimeable number, because it can be changed into a prime (111212332031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18535388686 + ... + 18535388691.

It is an arithmetic number, because the mean of its divisors is an integer number (37070777378).

Almost surely, 2^111212332131 is an apocalyptic number.

111212332131 is a deficient number, since it is larger than the sum of its proper divisors (37070777381).

111212332131 is an equidigital number, since it uses as much as digits as its factorization.

111212332131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37070777380.

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

Adding to 111212332131 its reverse (131233212111), we get a palindrome (242445544242).

The spelling of 111212332131 in words is "one hundred eleven billion, two hundred twelve million, three hundred thirty-two thousand, one hundred thirty-one".