221426327 has 2 divisors, whose sum is σ = 221426328. Its totient is φ = 221426326.

The previous prime is 221426311. The next prime is 221426341. The reversal of 221426327 is 723624122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221426327 - 2⁴ = 221426311 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221426327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221426827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110713163 + 110713164.

It is an arithmetic number, because the mean of its divisors is an integer number (110713164).

Almost surely, 2^221426327 is an apocalyptic number.

221426327 is a deficient number, since it is larger than the sum of its proper divisors (1).

221426327 is an equidigital number, since it uses as much as digits as its factorization.

221426327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 221426327 is about 14880.4007674525. The cubic root of 221426327 is about 604.9828804663.

The spelling of 221426327 in words is "two hundred twenty-one million, four hundred twenty-six thousand, three hundred twenty-seven".