220200001222181 has 2 divisors, whose sum is σ = 220200001222182. Its totient is φ = 220200001222180.

The previous prime is 220200001222087. The next prime is 220200001222261. The reversal of 220200001222181 is 181222100002022.

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., 196279147321156 + 23920853901025 = 14009966^2 + 4890895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220200001222181 is a prime.

It is a super-2 number, since 2×220200001222181² (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 (220200001222081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100000611090 + 110100000611091.

It is an arithmetic number, because the mean of its divisors is an integer number (110100000611091).

Almost surely, 2^{220200001222181} is an apocalyptic number.

It is an amenable number.

220200001222181 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200001222181 is an equidigital number, since it uses as much as digits as its factorization.

220200001222181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 220200001222181 in words is "two hundred twenty trillion, two hundred billion, one million, two hundred twenty-two thousand, one hundred eighty-one".