11202100121 has 2 divisors, whose sum is σ = 11202100122. Its totient is φ = 11202100120.

The previous prime is 11202100111. The next prime is 11202100141. The reversal of 11202100121 is 12100120211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6878380096 + 4323720025 = 82936^2 + 65755^2 .

It is an emirp because it is prime and its reverse (12100120211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11202100121 - 2³⁰ = 10128358297 is a prime.

It is not a weakly prime, because it can be changed into another prime (11202100111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601050060 + 5601050061.

It is an arithmetic number, because the mean of its divisors is an integer number (5601050061).

Almost surely, 2^11202100121 is an apocalyptic number.

It is an amenable number.

11202100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202100121 is an equidigital number, since it uses as much as digits as its factorization.

11202100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11202100121 its reverse (12100120211), we get a palindrome (23302220332).

The spelling of 11202100121 in words is "eleven billion, two hundred two million, one hundred thousand, one hundred twenty-one".