222156278459 has 2 divisors, whose sum is σ = 222156278460. Its totient is φ = 222156278458.

The previous prime is 222156278441. The next prime is 222156278549. The reversal of 222156278459 is 954872651222.

It is a happy number.

Together with next prime (222156278549) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222156278459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222156278459.

It is not a weakly prime, because it can be changed into another prime (222156278419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111078139229 + 111078139230.

It is an arithmetic number, because the mean of its divisors is an integer number (111078139230).

Almost surely, 2^222156278459 is an apocalyptic number.

222156278459 is a deficient number, since it is larger than the sum of its proper divisors (1).

222156278459 is an equidigital number, since it uses as much as digits as its factorization.

222156278459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 53.

The spelling of 222156278459 in words is "two hundred twenty-two billion, one hundred fifty-six million, two hundred seventy-eight thousand, four hundred fifty-nine".