222237350032661 has 2 divisors, whose sum is σ = 222237350032662. Its totient is φ = 222237350032660.

The previous prime is 222237350032631. The next prime is 222237350032667. The reversal of 222237350032661 is 166230053732222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212925734400625 + 9311615632036 = 14591975^2 + 3051494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222237350032661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222237350032667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111118675016330 + 111118675016331.

It is an arithmetic number, because the mean of its divisors is an integer number (111118675016331).

Almost surely, 2^{222237350032661} is an apocalyptic number.

It is an amenable number.

222237350032661 is a deficient number, since it is larger than the sum of its proper divisors (1).

222237350032661 is an equidigital number, since it uses as much as digits as its factorization.

222237350032661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 222237350032661 in words is "two hundred twenty-two trillion, two hundred thirty-seven billion, three hundred fifty million, thirty-two thousand, six hundred sixty-one".