220111056 has 60 divisors (see below), whose sum is σ = 672010560. Its totient is φ = 66699840.

The previous prime is 220111051. The next prime is 220111057. The reversal of 220111056 is 650111022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67896 + ... + 71063.

It is an arithmetic number, because the mean of its divisors is an integer number (11200176).

Almost surely, 2^220111056 is an apocalyptic number.

It is an amenable number.

220111056 is an abundant number, since it is smaller than the sum of its proper divisors (451899504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220111056 is a wasteful number, since it uses less digits than its factorization.

220111056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138984 (or 138975 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 220111056 is about 14836.1401988523. The cubic root of 220111056 is about 603.7826359941.

Adding to 220111056 its reverse (650111022), we get a palindrome (870222078).

The spelling of 220111056 in words is "two hundred twenty million, one hundred eleven thousand, fifty-six".