20120223 has 4 divisors (see below), whose sum is σ = 26826968. Its totient is φ = 13413480.

The previous prime is 20120213. The next prime is 20120237. The reversal of 20120223 is 32202102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20120223 - 2⁴ = 20120207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120199 and 20120208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120203) 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, 3353368 + ... + 3353373.

It is an arithmetic number, because the mean of its divisors is an integer number (6706742).

Almost surely, 2^20120223 is an apocalyptic number.

20120223 is a deficient number, since it is larger than the sum of its proper divisors (6706745).

20120223 is an equidigital number, since it uses as much as digits as its factorization.

20120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706744.

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

The square root of 20120223 is about 4485.5571560287. The cubic root of 20120223 is about 271.9845678600.

Adding to 20120223 its reverse (32202102), we get a palindrome (52322325).

The spelling of 20120223 in words is "twenty million, one hundred twenty thousand, two hundred twenty-three".