222404041100261 has 2 divisors, whose sum is σ = 222404041100262. Its totient is φ = 222404041100260.

The previous prime is 222404041100077. The next prime is 222404041100299. The reversal of 222404041100261 is 162001140404222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130227125124100 + 92176915976161 = 11411710^2 + 9600881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222404041100261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222404041100561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111202020550130 + 111202020550131.

It is an arithmetic number, because the mean of its divisors is an integer number (111202020550131).

Almost surely, 2^{222404041100261} is an apocalyptic number.

It is an amenable number.

222404041100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

222404041100261 is an equidigital number, since it uses as much as digits as its factorization.

222404041100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 222404041100261 its reverse (162001140404222), we get a palindrome (384405181504483).

The spelling of 222404041100261 in words is "two hundred twenty-two trillion, four hundred four billion, forty-one million, one hundred thousand, two hundred sixty-one".