220420111 has 2 divisors, whose sum is σ = 220420112. Its totient is φ = 220420110.

The previous prime is 220420099. The next prime is 220420129. The reversal of 220420111 is 111024022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220420111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220420091 and 220420100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220420411) 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, 110210055 + 110210056.

It is an arithmetic number, because the mean of its divisors is an integer number (110210056).

Almost surely, 2^220420111 is an apocalyptic number.

220420111 is a deficient number, since it is larger than the sum of its proper divisors (1).

220420111 is an equidigital number, since it uses as much as digits as its factorization.

220420111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 220420111 is about 14846.5521586663. The cubic root of 220420111 is about 604.0650915552.

Adding to 220420111 its reverse (111024022), we get a palindrome (331444133).

The spelling of 220420111 in words is "two hundred twenty million, four hundred twenty thousand, one hundred eleven".