220201211220197 has 2 divisors, whose sum is σ = 220201211220198. Its totient is φ = 220201211220196.

The previous prime is 220201211220161. The next prime is 220201211220299. The reversal of 220201211220197 is 791022112102022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162847868126596 + 57353343093601 = 12761186^2 + 7573199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201211220197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220201211222197) 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, 110100605610098 + 110100605610099.

It is an arithmetic number, because the mean of its divisors is an integer number (110100605610099).

Almost surely, 2^{220201211220197} is an apocalyptic number.

It is an amenable number.

220201211220197 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201211220197 is an equidigital number, since it uses as much as digits as its factorization.

220201211220197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 220201211220197 in words is "two hundred twenty trillion, two hundred one billion, two hundred eleven million, two hundred twenty thousand, one hundred ninety-seven".