220220211112261 has 2 divisors, whose sum is σ = 220220211112262. Its totient is φ = 220220211112260.

The previous prime is 220220211112177. The next prime is 220220211112309. The reversal of 220220211112261 is 162211112022022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218772053993025 + 1448157119236 = 14790945^2 + 1203394^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220211112261 - 2¹⁵ = 220220211079493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220220211112861) 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, 110110105556130 + 110110105556131.

It is an arithmetic number, because the mean of its divisors is an integer number (110110105556131).

Almost surely, 2^{220220211112261} is an apocalyptic number.

It is an amenable number.

220220211112261 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220211112261 is an equidigital number, since it uses as much as digits as its factorization.

220220211112261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 220220211112261 its reverse (162211112022022), we get a palindrome (382431323134283).

The spelling of 220220211112261 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred eleven million, one hundred twelve thousand, two hundred sixty-one".