220776223 has 2 divisors, whose sum is σ = 220776224. Its totient is φ = 220776222.

The previous prime is 220776221. The next prime is 220776251. The reversal of 220776223 is 322677022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220776223 - 2¹ = 220776221 is a prime.

Together with 220776221, it forms a pair of twin primes.

It is equal to p_12162856 and since 220776223 and 12162856 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220776221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110388111 + 110388112.

It is an arithmetic number, because the mean of its divisors is an integer number (110388112).

Almost surely, 2^220776223 is an apocalyptic number.

220776223 is a deficient number, since it is larger than the sum of its proper divisors (1).

220776223 is an equidigital number, since it uses as much as digits as its factorization.

220776223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 220776223 is about 14858.5404061099. The cubic root of 220776223 is about 604.3902268675.

The spelling of 220776223 in words is "two hundred twenty million, seven hundred seventy-six thousand, two hundred twenty-three".