22013263 has 4 divisors (see below), whose sum is σ = 22227088. Its totient is φ = 21799440.

The previous prime is 22013239. The next prime is 22013273. The reversal of 22013263 is 36231022.

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 22013263 - 2⁹ = 22012751 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 22013263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013203) 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, 106758 + ... + 106963.

It is an arithmetic number, because the mean of its divisors is an integer number (5556772).

Almost surely, 2^22013263 is an apocalyptic number.

22013263 is a deficient number, since it is larger than the sum of its proper divisors (213825).

22013263 is a wasteful number, since it uses less digits than its factorization.

22013263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213824.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22013263 is about 4691.8293873499. The cubic root of 22013263 is about 280.2602300079.

Adding to 22013263 its reverse (36231022), we get a palindrome (58244285).

The spelling of 22013263 in words is "twenty-two million, thirteen thousand, two hundred sixty-three".