11210120121997 has 2 divisors, whose sum is σ = 11210120121998. Its totient is φ = 11210120121996.

The previous prime is 11210120121929. The next prime is 11210120122001. The reversal of 11210120121997 is 79912102101211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11018721746916 + 191398375081 = 3319446^2 + 437491^2 .

It is an emirp because it is prime and its reverse (79912102101211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11210120121997 - 2⁷ = 11210120121869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11210150121997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605060060998 + 5605060060999.

It is an arithmetic number, because the mean of its divisors is an integer number (5605060060999).

Almost surely, 2^{11210120121997} is an apocalyptic number.

It is an amenable number.

11210120121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11210120121997 is an equidigital number, since it uses as much as digits as its factorization.

11210120121997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 37.

The spelling of 11210120121997 in words is "eleven trillion, two hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, nine hundred ninety-seven".