222194123 has 2 divisors, whose sum is σ = 222194124. Its totient is φ = 222194122.

The previous prime is 222194111. The next prime is 222194149. The reversal of 222194123 is 321491222.

It is an a-pointer prime, because the next prime (222194149) can be obtained adding 222194123 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222194123 - 2²⁴ = 205416907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222194092 and 222194101.

It is not a weakly prime, because it can be changed into another prime (222194153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111097061 + 111097062.

It is an arithmetic number, because the mean of its divisors is an integer number (111097062).

Almost surely, 2^222194123 is an apocalyptic number.

222194123 is a deficient number, since it is larger than the sum of its proper divisors (1).

222194123 is an equidigital number, since it uses as much as digits as its factorization.

222194123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 222194123 is about 14906.1773436384. The cubic root of 222194123 is about 605.6813333636.

The spelling of 222194123 in words is "two hundred twenty-two million, one hundred ninety-four thousand, one hundred twenty-three".