20012223 has 32 divisors (see below), whose sum is σ = 34094592. Its totient is φ = 10137600.

The previous prime is 20012219. The next prime is 20012261. The reversal of 20012223 is 32221002.

It is not a de Polignac number, because 20012223 - 2² = 20012219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012199 and 20012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012203) 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, 8415 + ... + 10527.

It is an arithmetic number, because the mean of its divisors is an integer number (1065456).

Almost surely, 2^20012223 is an apocalyptic number.

20012223 is a deficient number, since it is larger than the sum of its proper divisors (14082369).

20012223 is a wasteful number, since it uses less digits than its factorization.

20012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20012223 is about 4473.5023192125. The cubic root of 20012223 is about 271.4970476092.

Adding to 20012223 its reverse (32221002), we get a palindrome (52233225).

It can be divided in two parts, 2001 and 2223, that added together give a palindrome (4224).

The spelling of 20012223 in words is "twenty million, twelve thousand, two hundred twenty-three".