220266451 has 2 divisors, whose sum is σ = 220266452. Its totient is φ = 220266450.

The previous prime is 220266421. The next prime is 220266509. The reversal of 220266451 is 154662022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220266451 - 2⁷ = 220266323 is a prime.

It is a super-2 number, since 2×220266451² = 97034618872270802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220266401) 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, 110133225 + 110133226.

It is an arithmetic number, because the mean of its divisors is an integer number (110133226).

Almost surely, 2^220266451 is an apocalyptic number.

220266451 is a deficient number, since it is larger than the sum of its proper divisors (1).

220266451 is an equidigital number, since it uses as much as digits as its factorization.

220266451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 220266451 is about 14841.3763175792. The cubic root of 220266451 is about 603.9246896366.

The spelling of 220266451 in words is "two hundred twenty million, two hundred sixty-six thousand, four hundred fifty-one".