11222100121 has 2 divisors, whose sum is σ = 11222100122. Its totient is φ = 11222100120.

The previous prime is 11222100083. The next prime is 11222100151. The reversal of 11222100121 is 12100122211.

11222100121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10783784025 + 438316096 = 103845^2 + 20936^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222100121 - 2²⁵ = 11188545689 is a prime.

It is a super-2 number, since 2×11222100121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11222100151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611050060 + 5611050061.

It is an arithmetic number, because the mean of its divisors is an integer number (5611050061).

Almost surely, 2^11222100121 is an apocalyptic number.

It is an amenable number.

11222100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222100121 is an equidigital number, since it uses as much as digits as its factorization.

11222100121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11222100121 its reverse (12100122211), we get a palindrome (23322222332).

The spelling of 11222100121 in words is "eleven billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".