22212563 has 8 divisors (see below), whose sum is σ = 22656096. Its totient is φ = 21772800.

The previous prime is 22212527. The next prime is 22212569. The reversal of 22212563 is 36521222.

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-22212563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12893 + ... + 14513.

It is an arithmetic number, because the mean of its divisors is an integer number (2832012).

Almost surely, 2^22212563 is an apocalyptic number.

22212563 is a deficient number, since it is larger than the sum of its proper divisors (443533).

22212563 is a wasteful number, since it uses less digits than its factorization.

22212563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its digits is 1440, while the sum is 23.

The square root of 22212563 is about 4713.0205813257. The cubic root of 22212563 is about 281.1034813461.

Adding to 22212563 its reverse (36521222), we get a palindrome (58733785).

The spelling of 22212563 in words is "twenty-two million, two hundred twelve thousand, five hundred sixty-three".