11388010121 has 2 divisors, whose sum is σ = 11388010122. Its totient is φ = 11388010120.

The previous prime is 11388010003. The next prime is 11388010157. The reversal of 11388010121 is 12101088311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11245542025 + 142468096 = 106045^2 + 11936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11388010121 is a prime.

It is not a weakly prime, because it can be changed into another prime (11388010181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694005060 + 5694005061.

It is an arithmetic number, because the mean of its divisors is an integer number (5694005061).

Almost surely, 2^11388010121 is an apocalyptic number.

It is an amenable number.

11388010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11388010121 is an equidigital number, since it uses as much as digits as its factorization.

11388010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 26.

Adding to 11388010121 its reverse (12101088311), we get a palindrome (23489098432).

The spelling of 11388010121 in words is "eleven billion, three hundred eighty-eight million, ten thousand, one hundred twenty-one".