220201345 has 48 divisors (see below), whose sum is σ = 338300928. Its totient is φ = 136321920.

The previous prime is 220201343. The next prime is 220201381. The reversal of 220201345 is 543102022.

It is not a de Polignac number, because 220201345 - 2¹ = 220201343 is a prime.

It is a super-3 number, since 3×220201345³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (220201343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148960 + ... + 150430.

It is an arithmetic number, because the mean of its divisors is an integer number (7047936).

Almost surely, 2^220201345 is an apocalyptic number.

It is an amenable number.

220201345 is a deficient number, since it is larger than the sum of its proper divisors (118099583).

220201345 is a wasteful number, since it uses less digits than its factorization.

220201345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220201345 is about 14839.1827605162. The cubic root of 220201345 is about 603.8651814133.

Adding to 220201345 its reverse (543102022), we get a palindrome (763303367).

The spelling of 220201345 in words is "two hundred twenty million, two hundred one thousand, three hundred forty-five".