1111123202113 has 2 divisors, whose sum is σ = 1111123202114. Its totient is φ = 1111123202112.

The previous prime is 1111123201961. The next prime is 1111123202177. The reversal of 1111123202113 is 3112023211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018629969984 + 92493232129 = 1009272^2 + 304127^2 .

It is an emirp because it is prime and its reverse (3112023211111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111123202113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111123202513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555561601056 + 555561601057.

It is an arithmetic number, because the mean of its divisors is an integer number (555561601057).

Almost surely, 2^{1111123202113} is an apocalyptic number.

It is an amenable number.

1111123202113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111123202113 is an equidigital number, since it uses as much as digits as its factorization.

1111123202113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1111123202113 its reverse (3112023211111), we get a palindrome (4223146413224).

The spelling of 1111123202113 in words is "one trillion, one hundred eleven billion, one hundred twenty-three million, two hundred two thousand, one hundred thirteen".