111100121331 has 4 divisors (see below), whose sum is σ = 148133495112. Its totient is φ = 74066747552.

The previous prime is 111100121323. The next prime is 111100121339. The reversal of 111100121331 is 133121001111.

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

It is an interprime number because it is at equal distance from previous prime (111100121323) and next prime (111100121339).

It is a cyclic number.

It is not a de Polignac number, because 111100121331 - 2³ = 111100121323 is a prime.

It is a super-2 number, since 2×111100121331² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111100121331.

It is not an unprimeable number, because it can be changed into a prime (111100121339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18516686886 + ... + 18516686891.

It is an arithmetic number, because the mean of its divisors is an integer number (37033373778).

Almost surely, 2^111100121331 is an apocalyptic number.

111100121331 is a deficient number, since it is larger than the sum of its proper divisors (37033373781).

111100121331 is an equidigital number, since it uses as much as digits as its factorization.

111100121331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37033373780.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 111100121331 its reverse (133121001111), we get a palindrome (244221122442).

The spelling of 111100121331 in words is "one hundred eleven billion, one hundred million, one hundred twenty-one thousand, three hundred thirty-one".