121110122213 has 2 divisors, whose sum is σ = 121110122214. Its totient is φ = 121110122212.

The previous prime is 121110122149. The next prime is 121110122249. The reversal of 121110122213 is 312221011121.

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., 71033976484 + 50076145729 = 266522^2 + 223777^2 .

It is a cyclic number.

It is not a de Polignac number, because 121110122213 - 2⁶ = 121110122149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121110122191 and 121110122200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121110122713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555061106 + 60555061107.

It is an arithmetic number, because the mean of its divisors is an integer number (60555061107).

Almost surely, 2^121110122213 is an apocalyptic number.

It is an amenable number.

121110122213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121110122213 is an equidigital number, since it uses as much as digits as its factorization.

121110122213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121110122213 its reverse (312221011121), we get a palindrome (433331133334).

The spelling of 121110122213 in words is "one hundred twenty-one billion, one hundred ten million, one hundred twenty-two thousand, two hundred thirteen".