111001002131 has 2 divisors, whose sum is σ = 111001002132. Its totient is φ = 111001002130.

The previous prime is 111001002113. The next prime is 111001002149. The reversal of 111001002131 is 131200100111.

It is a happy number.

Together with previous prime (111001002113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (111001002113) and next prime (111001002149).

It is a cyclic number.

It is not a de Polignac number, because 111001002131 - 2²⁶ = 110933893267 is a prime.

It is a super-2 number, since 2×111001002131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111001002331) 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 as a sum of consecutive naturals, namely, 55500501065 + 55500501066.

It is an arithmetic number, because the mean of its divisors is an integer number (55500501066).

Almost surely, 2^111001002131 is an apocalyptic number.

111001002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001002131 is an equidigital number, since it uses as much as digits as its factorization.

111001002131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 111001002131 its reverse (131200100111), we get a palindrome (242201102242).

The spelling of 111001002131 in words is "one hundred eleven billion, one million, two thousand, one hundred thirty-one".