220200022181 has 2 divisors, whose sum is σ = 220200022182. Its totient is φ = 220200022180.

The previous prime is 220200022171. The next prime is 220200022249. The reversal of 220200022181 is 181220002022.

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., 148822350625 + 71377671556 = 385775^2 + 267166^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200022181 - 2⁶ = 220200022117 is a prime.

It is a super-2 number, since 2×220200022181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220200022111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100011090 + 110100011091.

It is an arithmetic number, because the mean of its divisors is an integer number (110100011091).

Almost surely, 2^220200022181 is an apocalyptic number.

It is an amenable number.

220200022181 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200022181 is an equidigital number, since it uses as much as digits as its factorization.

220200022181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 220200022181 in words is "two hundred twenty billion, two hundred million, twenty-two thousand, one hundred eighty-one".