1222011999997 has 2 divisors, whose sum is σ = 1222011999998. Its totient is φ = 1222011999996.

The previous prime is 1222011999977. The next prime is 1222012000021. The reversal of 1222011999997 is 7999991102221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061087468281 + 160924531716 = 1030091^2 + 401154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222011999997 - 2²⁷ = 1221877782269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222011999977) 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, 611005999998 + 611005999999.

It is an arithmetic number, because the mean of its divisors is an integer number (611005999999).

Almost surely, 2^{1222011999997} is an apocalyptic number.

It is an amenable number.

1222011999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222011999997 is an equidigital number, since it uses as much as digits as its factorization.

1222011999997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3306744, while the sum is 61.

The spelling of 1222011999997 in words is "one trillion, two hundred twenty-two billion, eleven million, nine hundred ninety-nine thousand, nine hundred ninety-seven".