222000012223261 has 2 divisors, whose sum is σ = 222000012223262. Its totient is φ = 222000012223260.

The previous prime is 222000012223169. The next prime is 222000012223321. The reversal of 222000012223261 is 162322210000222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135442927620025 + 86557084603236 = 11637995^2 + 9303606^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000012223261 - 2¹¹ = 222000012221213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222000012223861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000006111630 + 111000006111631.

It is an arithmetic number, because the mean of its divisors is an integer number (111000006111631).

Almost surely, 2^{222000012223261} is an apocalyptic number.

It is an amenable number.

222000012223261 is a deficient number, since it is larger than the sum of its proper divisors (1).

222000012223261 is an equidigital number, since it uses as much as digits as its factorization.

222000012223261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 222000012223261 its reverse (162322210000222), we get a palindrome (384322222223483).

The spelling of 222000012223261 in words is "two hundred twenty-two trillion, twelve million, two hundred twenty-three thousand, two hundred sixty-one".