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220220121000181 is a prime number
BaseRepresentation
bin110010000100100111111110…
…000101011010100011110101
31001212201211121212120222000111
4302010213332011122203311
5212331041301434001211
62100211421004343021
764246243615065511
oct6204477605324365
91055654555528014
10220220121000181
11641949131a5855
1220848174b44a71
1395b588c353943
143c549d4345141
151a6d66da67421
hexc849fe15a8f5

220220121000181 has 2 divisors, whose sum is σ = 220220121000182. Its totient is φ = 220220121000180.

The previous prime is 220220121000167. The next prime is 220220121000197. The reversal of 220220121000181 is 181000121022022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213524162601156 + 6695958399025 = 14612466^2 + 2587655^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220121000181 - 25 = 220220121000149 is a prime.

It is a super-2 number, since 2×2202201210001812 (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 (220220121000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110060500090 + 110110060500091.

It is an arithmetic number, because the mean of its divisors is an integer number (110110060500091).

Almost surely, 2220220121000181 is an apocalyptic number.

It is an amenable number.

220220121000181 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220121000181 is an equidigital number, since it uses as much as digits as its factorization.

220220121000181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 220220121000181 in words is "two hundred twenty trillion, two hundred twenty billion, one hundred twenty-one million, one hundred eighty-one", and thus it is an aban number.