222561303641 has 2 divisors, whose sum is σ = 222561303642. Its totient is φ = 222561303640.

The previous prime is 222561303607. The next prime is 222561303661. The reversal of 222561303641 is 146303165222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203923593241 + 18637710400 = 451579^2 + 136520^2 .

It is a cyclic number.

It is not a de Polignac number, because 222561303641 - 2¹⁸ = 222561041497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (222561303661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111280651820 + 111280651821.

It is an arithmetic number, because the mean of its divisors is an integer number (111280651821).

Almost surely, 2^222561303641 is an apocalyptic number.

It is an amenable number.

222561303641 is a deficient number, since it is larger than the sum of its proper divisors (1).

222561303641 is an equidigital number, since it uses as much as digits as its factorization.

222561303641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 222561303641 its reverse (146303165222), we get a palindrome (368864468863).

The spelling of 222561303641 in words is "two hundred twenty-two billion, five hundred sixty-one million, three hundred three thousand, six hundred forty-one".