220111001 has 8 divisors (see below), whose sum is σ = 245978208. Its totient is φ = 195220000.

The previous prime is 220110967. The next prime is 220111027. The reversal of 220111001 is 100111022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220111001 is a prime.

It is a super-2 number, since 2×220111001² = 96897705522444002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220111001.

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 7 ways as a sum of consecutive naturals, for example, 243575 + ... + 244476.

It is an arithmetic number, because the mean of its divisors is an integer number (30747276).

Almost surely, 2^220111001 is an apocalyptic number.

It is an amenable number.

220111001 is a deficient number, since it is larger than the sum of its proper divisors (25867207).

220111001 is a wasteful number, since it uses less digits than its factorization.

220111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488103.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 220111001 is about 14836.1383452703. The cubic root of 220111001 is about 603.7825857043.

Adding to 220111001 its reverse (100111022), we get a palindrome (320222023).

The spelling of 220111001 in words is "two hundred twenty million, one hundred eleven thousand, one".