112212221121997 has 2 divisors, whose sum is σ = 112212221121998. Its totient is φ = 112212221121996.

The previous prime is 112212221121961. The next prime is 112212221122007. The reversal of 112212221121997 is 799121122212211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66570765946281 + 45641455175716 = 8159091^2 + 6755846^2 .

It is a cyclic number.

It is not a de Polignac number, because 112212221121997 - 2¹⁵ = 112212221089229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112212221101997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56106110560998 + 56106110560999.

It is an arithmetic number, because the mean of its divisors is an integer number (56106110560999).

Almost surely, 2^{112212221121997} is an apocalyptic number.

It is an amenable number.

112212221121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

112212221121997 is an equidigital number, since it uses as much as digits as its factorization.

112212221121997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 43.

The spelling of 112212221121997 in words is "one hundred twelve trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, nine hundred ninety-seven".