220012101997 has 2 divisors, whose sum is σ = 220012101998. Its totient is φ = 220012101996.

The previous prime is 220012101971. The next prime is 220012102007. The reversal of 220012101997 is 799101210022.

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., 149327372041 + 70684729956 = 386429^2 + 265866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220012101997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220012102997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110006050998 + 110006050999.

It is an arithmetic number, because the mean of its divisors is an integer number (110006050999).

Almost surely, 2^220012101997 is an apocalyptic number.

It is an amenable number.

220012101997 is a deficient number, since it is larger than the sum of its proper divisors (1).

220012101997 is an equidigital number, since it uses as much as digits as its factorization.

220012101997 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 34.

The spelling of 220012101997 in words is "two hundred twenty billion, twelve million, one hundred one thousand, nine hundred ninety-seven".