220668011 has 2 divisors, whose sum is σ = 220668012. Its totient is φ = 220668010.

The previous prime is 220668001. The next prime is 220668029. The reversal of 220668011 is 110866022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220668011 - 2⁶ = 220667947 is a prime.

It is a super-2 number, since 2×220668011² = 97388742157392242, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (220668001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110334005 + 110334006.

It is an arithmetic number, because the mean of its divisors is an integer number (110334006).

Almost surely, 2^220668011 is an apocalyptic number.

220668011 is a deficient number, since it is larger than the sum of its proper divisors (1).

220668011 is an equidigital number, since it uses as much as digits as its factorization.

220668011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 220668011 is about 14854.8985523295. The cubic root of 220668011 is about 604.2914647774.

The spelling of 220668011 in words is "two hundred twenty million, six hundred sixty-eight thousand, eleven".