220331227 has 2 divisors, whose sum is σ = 220331228. Its totient is φ = 220331226.

The previous prime is 220331173. The next prime is 220331231. The reversal of 220331227 is 722133022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220331227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220331198 and 220331207.

It is not a weakly prime, because it can be changed into another prime (220331327) 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, 110165613 + 110165614.

It is an arithmetic number, because the mean of its divisors is an integer number (110165614).

Almost surely, 2^220331227 is an apocalyptic number.

220331227 is a deficient number, since it is larger than the sum of its proper divisors (1).

220331227 is an equidigital number, since it uses as much as digits as its factorization.

220331227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 220331227 is about 14843.5584345534. The cubic root of 220331227 is about 603.9838845970.

Adding to 220331227 its reverse (722133022), we get a palindrome (942464249).

The spelling of 220331227 in words is "two hundred twenty million, three hundred thirty-one thousand, two hundred twenty-seven".