222112303211261 has 2 divisors, whose sum is σ = 222112303211262. Its totient is φ = 222112303211260.

The previous prime is 222112303211209. The next prime is 222112303211311. The reversal of 222112303211261 is 162112303211222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157436769959161 + 64675533252100 = 12547381^2 + 8042110^2 .

It is a cyclic number.

It is not a de Polignac number, because 222112303211261 - 2³⁸ = 221837425304317 is a prime.

It is a super-2 number, since 2×222112303211261² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222112303411261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056151605630 + 111056151605631.

It is an arithmetic number, because the mean of its divisors is an integer number (111056151605631).

Almost surely, 2^{222112303211261} is an apocalyptic number.

It is an amenable number.

222112303211261 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112303211261 is an equidigital number, since it uses as much as digits as its factorization.

222112303211261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 222112303211261 its reverse (162112303211222), we get a palindrome (384224606422483).

The spelling of 222112303211261 in words is "two hundred twenty-two trillion, one hundred twelve billion, three hundred three million, two hundred eleven thousand, two hundred sixty-one".