22220263 has 4 divisors (see below), whose sum is σ = 23929528. Its totient is φ = 20511000.

The previous prime is 22220257. The next prime is 22220267. The reversal of 22220263 is 36202222.

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

It is a cyclic number.

It is not a de Polignac number, because 22220263 - 2⁹ = 22219751 is a prime.

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 22220263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854613 + ... + 854638.

It is an arithmetic number, because the mean of its divisors is an integer number (5982382).

Almost surely, 2^22220263 is an apocalyptic number.

22220263 is a deficient number, since it is larger than the sum of its proper divisors (1709265).

22220263 is a wasteful number, since it uses less digits than its factorization.

22220263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709264.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 22220263 is about 4713.8373964319. The cubic root of 22220263 is about 281.1359591643.

Adding to 22220263 its reverse (36202222), we get a palindrome (58422485).

The spelling of 22220263 in words is "twenty-two million, two hundred twenty thousand, two hundred sixty-three".