22236123 has 32 divisors (see below), whose sum is σ = 37287936. Its totient is φ = 11472768.

The previous prime is 22236089. The next prime is 22236131. The reversal of 22236123 is 32163222.

It is not a de Polignac number, because 22236123 - 2⁸ = 22235867 is a prime.

It is a super-2 number, since 2×22236123² = 988890332142258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22236123.

It is not an unprimeable number, because it can be changed into a prime (22236133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11965 + ... + 13697.

It is an arithmetic number, because the mean of its divisors is an integer number (1165248).

Almost surely, 2^22236123 is an apocalyptic number.

22236123 is a deficient number, since it is larger than the sum of its proper divisors (15051813).

22236123 is a wasteful number, since it uses less digits than its factorization.

22236123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its digits is 864, while the sum is 21.

The square root of 22236123 is about 4715.5193775447. The cubic root of 22236123 is about 281.2028313984.

Adding to 22236123 its reverse (32163222), we get a palindrome (54399345).

The spelling of 22236123 in words is "twenty-two million, two hundred thirty-six thousand, one hundred twenty-three".