111121110131 has 2 divisors, whose sum is σ = 111121110132. Its totient is φ = 111121110130.

The previous prime is 111121110097. The next prime is 111121110161. The reversal of 111121110131 is 131011121111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111121110131 - 2¹⁴ = 111121093747 is a prime.

It is a super-2 number, since 2×111121110131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111121110161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560555065 + 55560555066.

It is an arithmetic number, because the mean of its divisors is an integer number (55560555066).

Almost surely, 2^111121110131 is an apocalyptic number.

111121110131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121110131 is an equidigital number, since it uses as much as digits as its factorization.

111121110131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 111121110131 its reverse (131011121111), we get a palindrome (242132231242).

The spelling of 111121110131 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, one hundred thirty-one".