220122100020197 has 2 divisors, whose sum is σ = 220122100020198. Its totient is φ = 220122100020196.

The previous prime is 220122100020161. The next prime is 220122100020209. The reversal of 220122100020197 is 791020001221022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213942371379361 + 6179728640836 = 14626769^2 + 2485906^2 .

It is a cyclic number.

It is not a de Polignac number, because 220122100020197 - 2¹⁸ = 220122099758053 is a prime.

It is a super-2 number, since 2×220122100020197² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220122100028197) 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, 110061050010098 + 110061050010099.

It is an arithmetic number, because the mean of its divisors is an integer number (110061050010099).

Almost surely, 2^{220122100020197} is an apocalyptic number.

It is an amenable number.

220122100020197 is a deficient number, since it is larger than the sum of its proper divisors (1).

220122100020197 is an equidigital number, since it uses as much as digits as its factorization.

220122100020197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 220122100020197 in words is "two hundred twenty trillion, one hundred twenty-two billion, one hundred million, twenty thousand, one hundred ninety-seven".