1223112109997 has 2 divisors, whose sum is σ = 1223112109998. Its totient is φ = 1223112109996.

The previous prime is 1223112109981. The next prime is 1223112110047. The reversal of 1223112109997 is 7999012113221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935967242116 + 287144867881 = 967454^2 + 535859^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223112109997 - 2⁴ = 1223112109981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223112109097) 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, 611556054998 + 611556054999.

It is an arithmetic number, because the mean of its divisors is an integer number (611556054999).

Almost surely, 2^{1223112109997} is an apocalyptic number.

It is an amenable number.

1223112109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223112109997 is an equidigital number, since it uses as much as digits as its factorization.

1223112109997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 47.

The spelling of 1223112109997 in words is "one trillion, two hundred twenty-three billion, one hundred twelve million, one hundred nine thousand, nine hundred ninety-seven".