1220112100997 has 2 divisors, whose sum is σ = 1220112100998. Its totient is φ = 1220112100996.

The previous prime is 1220112100967. The next prime is 1220112101023. The reversal of 1220112100997 is 7990012110221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863847560356 + 356264540641 = 929434^2 + 596879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220112100997 - 2⁸ = 1220112100741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220112100957) 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, 610056050498 + 610056050499.

It is an arithmetic number, because the mean of its divisors is an integer number (610056050499).

Almost surely, 2^{1220112100997} is an apocalyptic number.

It is an amenable number.

1220112100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112100997 is an equidigital number, since it uses as much as digits as its factorization.

1220112100997 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 35.

The spelling of 1220112100997 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred thousand, nine hundred ninety-seven".