220243522 has 4 divisors (see below), whose sum is σ = 330365286. Its totient is φ = 110121760.

The previous prime is 220243493. The next prime is 220243523. The reversal of 220243522 is 225342022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121022001 + 99221521 = 11001^2 + 9961^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 220243493 and 220243502.

It is not an unprimeable number, because it can be changed into a prime (220243523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55060879 + ... + 55060882.

Almost surely, 2^220243522 is an apocalyptic number.

220243522 is a deficient number, since it is larger than the sum of its proper divisors (110121764).

220243522 is a wasteful number, since it uses less digits than its factorization.

220243522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110121763.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 220243522 is about 14840.6038286857. The cubic root of 220243522 is about 603.9037333968.

Adding to 220243522 its reverse (225342022), we get a palindrome (445585544).

The spelling of 220243522 in words is "two hundred twenty million, two hundred forty-three thousand, five hundred twenty-two".