222444668879987 has 2 divisors, whose sum is σ = 222444668879988. Its totient is φ = 222444668879986.

The previous prime is 222444668879977. The next prime is 222444668880019. The reversal of 222444668879987 is 789978866444222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222444668879987 - 2³⁸ = 222169790973043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222444668879899 and 222444668879908.

It is not a weakly prime, because it can be changed into another prime (222444668879977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111222334439993 + 111222334439994.

It is an arithmetic number, because the mean of its divisors is an integer number (111222334439994).

Almost surely, 2^{222444668879987} is an apocalyptic number.

222444668879987 is a deficient number, since it is larger than the sum of its proper divisors (1).

222444668879987 is an equidigital number, since it uses as much as digits as its factorization.

222444668879987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37456183296, while the sum is 86.

The spelling of 222444668879987 in words is "two hundred twenty-two trillion, four hundred forty-four billion, six hundred sixty-eight million, eight hundred seventy-nine thousand, nine hundred eighty-seven".