222100021085617 has 2 divisors, whose sum is σ = 222100021085618. Its totient is φ = 222100021085616.

The previous prime is 222100021085609. The next prime is 222100021085623. The reversal of 222100021085617 is 716580120001222.

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., 219633852362401 + 2466168723216 = 14820049^2 + 1570404^2 .

It is a cyclic number.

It is not a de Polignac number, because 222100021085617 - 2³ = 222100021085609 is a prime.

It is not a weakly prime, because it can be changed into another prime (222100021085627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111050010542808 + 111050010542809.

It is an arithmetic number, because the mean of its divisors is an integer number (111050010542809).

Almost surely, 2^{222100021085617} is an apocalyptic number.

It is an amenable number.

222100021085617 is a deficient number, since it is larger than the sum of its proper divisors (1).

222100021085617 is an equidigital number, since it uses as much as digits as its factorization.

222100021085617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

Adding to 222100021085617 its reverse (716580120001222), we get a palindrome (938680141086839).

The spelling of 222100021085617 in words is "two hundred twenty-two trillion, one hundred billion, twenty-one million, eighty-five thousand, six hundred seventeen".