220044286981 has 2 divisors, whose sum is σ = 220044286982. Its totient is φ = 220044286980.

The previous prime is 220044286849. The next prime is 220044286993. The reversal of 220044286981 is 189682440022.

220044286981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204421536900 + 15622750081 = 452130^2 + 124991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220044286981 is a prime.

It is a super-2 number, since 2×220044286981² (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 (220044286481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110022143490 + 110022143491.

It is an arithmetic number, because the mean of its divisors is an integer number (110022143491).

Almost surely, 2^220044286981 is an apocalyptic number.

It is an amenable number.

220044286981 is a deficient number, since it is larger than the sum of its proper divisors (1).

220044286981 is an equidigital number, since it uses as much as digits as its factorization.

220044286981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 220044286981 in words is "two hundred twenty billion, forty-four million, two hundred eighty-six thousand, nine hundred eighty-one".