220134181 has 2 divisors, whose sum is σ = 220134182. Its totient is φ = 220134180.

The previous prime is 220134179. The next prime is 220134199. The reversal of 220134181 is 181431022.

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., 206928225 + 13205956 = 14385^2 + 3634^2 .

It is a cyclic number.

It is not a de Polignac number, because 220134181 - 2¹ = 220134179 is a prime.

It is a super-2 number, since 2×220134181² = 96918115289081522, which contains 22 as substring.

Together with 220134179, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220138181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110067090 + 110067091.

It is an arithmetic number, because the mean of its divisors is an integer number (110067091).

Almost surely, 2^220134181 is an apocalyptic number.

It is an amenable number.

220134181 is a deficient number, since it is larger than the sum of its proper divisors (1).

220134181 is an equidigital number, since it uses as much as digits as its factorization.

220134181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 220134181 is about 14836.9195252923. The cubic root of 220134181 is about 603.8037798427.

The spelling of 220134181 in words is "two hundred twenty million, one hundred thirty-four thousand, one hundred eighty-one".