121111002113 has 2 divisors, whose sum is σ = 121111002114. Its totient is φ = 121111002112.

The previous prime is 121111002109. The next prime is 121111002139. The reversal of 121111002113 is 311200111121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71177971264 + 49933030849 = 266792^2 + 223457^2 .

It is a cyclic number.

It is not a de Polignac number, because 121111002113 - 2² = 121111002109 is a prime.

It is not a weakly prime, because it can be changed into another prime (121111002143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555501056 + 60555501057.

It is an arithmetic number, because the mean of its divisors is an integer number (60555501057).

Almost surely, 2^121111002113 is an apocalyptic number.

It is an amenable number.

121111002113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111002113 is an equidigital number, since it uses as much as digits as its factorization.

121111002113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 121111002113 its reverse (311200111121), we get a palindrome (432311113234).

The spelling of 121111002113 in words is "one hundred twenty-one billion, one hundred eleven million, two thousand, one hundred thirteen".