112221020121997 has 2 divisors, whose sum is σ = 112221020121998. Its totient is φ = 112221020121996.

The previous prime is 112221020121943. The next prime is 112221020122021. The reversal of 112221020121997 is 799121020122211.

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., 102894629402601 + 9326390719396 = 10143699^2 + 3053914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112221020121997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112221021121997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56110510060998 + 56110510060999.

It is an arithmetic number, because the mean of its divisors is an integer number (56110510060999).

Almost surely, 2^{112221020121997} is an apocalyptic number.

It is an amenable number.

112221020121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

112221020121997 is an equidigital number, since it uses as much as digits as its factorization.

112221020121997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 112221020121997 in words is "one hundred twelve trillion, two hundred twenty-one billion, twenty million, one hundred twenty-one thousand, nine hundred ninety-seven".