111321012113 has 4 divisors (see below), whose sum is σ = 111325042980. Its totient is φ = 111316981248.

The previous prime is 111321012107. The next prime is 111321012193. The reversal of 111321012113 is 311210123111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311210123111 = 139 ⋅2238921749.

It can be written as a sum of positive squares in 2 ways, for example, as 99787755664 + 11533256449 = 315892^2 + 107393^2 .

It is a cyclic number.

It is not a de Polignac number, because 111321012113 - 2⁴ = 111321012097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111321012091 and 111321012100.

It is not an unprimeable number, because it can be changed into a prime (111321012193) 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, 1973720 + ... + 2029337.

It is an arithmetic number, because the mean of its divisors is an integer number (27831260745).

Almost surely, 2^111321012113 is an apocalyptic number.

It is an amenable number.

111321012113 is a deficient number, since it is larger than the sum of its proper divisors (4030867).

111321012113 is an equidigital number, since it uses as much as digits as its factorization.

111321012113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030866.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111321012113 its reverse (311210123111), we get a palindrome (422531135224).

The spelling of 111321012113 in words is "one hundred eleven billion, three hundred twenty-one million, twelve thousand, one hundred thirteen".