220013001 has 24 divisors (see below), whose sum is σ = 343115136. Its totient is φ = 135047520.

The previous prime is 220012993. The next prime is 220013023. The reversal of 220013001 is 100310022.

It is a happy number.

It is not a de Polignac number, because 220013001 - 2³ = 220012993 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (220013071) 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 23 ways as a sum of consecutive naturals, for example, 48246 + ... + 52608.

It is an arithmetic number, because the mean of its divisors is an integer number (14296464).

Almost surely, 2^220013001 is an apocalyptic number.

It is an amenable number.

220013001 is a deficient number, since it is larger than the sum of its proper divisors (123102135).

220013001 is a wasteful number, since it uses less digits than its factorization.

220013001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813 (or 4810 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 220013001 is about 14832.8352313373. The cubic root of 220013001 is about 603.6929650480.

Adding to 220013001 its reverse (100310022), we get a palindrome (320323023).

The spelling of 220013001 in words is "two hundred twenty million, thirteen thousand, one".