220111011 has 12 divisors (see below), whose sum is σ = 324703392. Its totient is φ = 143618256.

The previous prime is 220110967. The next prime is 220111027. The reversal of 220111011 is 110111022.

It is a happy number.

It is not a de Polignac number, because 220111011 - 2¹⁰ = 220109987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 220110984 and 220111002.

It is not an unprimeable number, because it can be changed into a prime (220111051) 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 in 11 ways as a sum of consecutive naturals, for example, 259756 + ... + 260601.

It is an arithmetic number, because the mean of its divisors is an integer number (27058616).

Almost surely, 2^220111011 is an apocalyptic number.

220111011 is a deficient number, since it is larger than the sum of its proper divisors (104592381).

220111011 is a wasteful number, since it uses less digits than its factorization.

220111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520410 (or 520407 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 220111011 is about 14836.1386822852. The cubic root of 220111011 is about 603.7825948479.

Adding to 220111011 its reverse (110111022), we get a palindrome (330222033).

The spelling of 220111011 in words is "two hundred twenty million, one hundred eleven thousand, eleven".