220511106 has 16 divisors (see below), whose sum is σ = 490024800. Its totient is φ = 73503684.

The previous prime is 220511089. The next prime is 220511119. The reversal of 220511106 is 601115022.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2041716 + ... + 2041823.

It is an arithmetic number, because the mean of its divisors is an integer number (30626550).

Almost surely, 2^220511106 is an apocalyptic number.

220511106 is an abundant number, since it is smaller than the sum of its proper divisors (269513694).

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

220511106 is a wasteful number, since it uses less digits than its factorization.

220511106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083550 (or 4083544 counting only the distinct ones).

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

The square root of 220511106 is about 14849.6163586808. The cubic root of 220511106 is about 604.1482045715.

Adding to 220511106 its reverse (601115022), we get a palindrome (821626128).

The spelling of 220511106 in words is "two hundred twenty million, five hundred eleven thousand, one hundred six".