111202120013 has 2 divisors, whose sum is σ = 111202120014. Its totient is φ = 111202120012.

The previous prime is 111202119949. The next prime is 111202120019. The reversal of 111202120013 is 310021202111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111084223849 + 117896164 = 333293^2 + 10858^2 .

It is an emirp because it is prime and its reverse (310021202111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111202120013 - 2⁶ = 111202119949 is a prime.

It is a super-2 number, since 2×111202120013² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111202120013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111202120019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601060006 + 55601060007.

It is an arithmetic number, because the mean of its divisors is an integer number (55601060007).

Almost surely, 2^111202120013 is an apocalyptic number.

It is an amenable number.

111202120013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202120013 is an equidigital number, since it uses as much as digits as its factorization.

111202120013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111202120013 its reverse (310021202111), we get a palindrome (421223322124).

The spelling of 111202120013 in words is "one hundred eleven billion, two hundred two million, one hundred twenty thousand, thirteen".