12111203113 has 2 divisors, whose sum is σ = 12111203114. Its totient is φ = 12111203112.

The previous prime is 12111203063. The next prime is 12111203119. The reversal of 12111203113 is 31130211121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8754970624 + 3356232489 = 93568^2 + 57933^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111203113 - 2⁹ = 12111202601 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111203119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055601556 + 6055601557.

It is an arithmetic number, because the mean of its divisors is an integer number (6055601557).

Almost surely, 2^12111203113 is an apocalyptic number.

It is an amenable number.

12111203113 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111203113 is an equidigital number, since it uses as much as digits as its factorization.

12111203113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12111203113 its reverse (31130211121), we get a palindrome (43241414234).

The spelling of 12111203113 in words is "twelve billion, one hundred eleven million, two hundred three thousand, one hundred thirteen".