22221023 has 16 divisors (see below), whose sum is σ = 25816320. Its totient is φ = 18902400.

The previous prime is 22221007. The next prime is 22221029. The reversal of 22221023 is 32012222.

It is not a de Polignac number, because 22221023 - 2⁴ = 22221007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22220989 and 22221007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61718 + ... + 62076.

It is an arithmetic number, because the mean of its divisors is an integer number (1613520).

Almost surely, 2^22221023 is an apocalyptic number.

22221023 is a deficient number, since it is larger than the sum of its proper divisors (3595297).

22221023 is a wasteful number, since it uses less digits than its factorization.

22221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22221023 is about 4713.9180094694. The cubic root of 22221023 is about 281.1391643603.

Adding to 22221023 its reverse (32012222), we get a palindrome (54233245).

The spelling of 22221023 in words is "twenty-two million, two hundred twenty-one thousand, twenty-three".