220200001222261 has 2 divisors, whose sum is σ = 220200001222262. Its totient is φ = 220200001222260.

The previous prime is 220200001222181. The next prime is 220200001222337. The reversal of 220200001222261 is 162222100002022.

220200001222261 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., 218928451805361 + 1271549416900 = 14796231^2 + 1127630^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200001222261 - 2³⁷ = 220062562268789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220200001222661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100000611130 + 110100000611131.

It is an arithmetic number, because the mean of its divisors is an integer number (110100000611131).

Almost surely, 2^{220200001222261} is an apocalyptic number.

It is an amenable number.

220200001222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200001222261 is an equidigital number, since it uses as much as digits as its factorization.

220200001222261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 220200001222261 its reverse (162222100002022), we get a palindrome (382422101224283).

The spelling of 220200001222261 in words is "two hundred twenty trillion, two hundred billion, one million, two hundred twenty-two thousand, two hundred sixty-one".