20102223 has 4 divisors (see below), whose sum is σ = 26802968. Its totient is φ = 13401480.

The previous prime is 20102219. The next prime is 20102227. The reversal of 20102223 is 32220102.

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

It is an interprime number because it is at equal distance from previous prime (20102219) and next prime (20102227).

It is not a de Polignac number, because 20102223 - 2² = 20102219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102199 and 20102208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102227) 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, 3350368 + ... + 3350373.

It is an arithmetic number, because the mean of its divisors is an integer number (6700742).

Almost surely, 2^20102223 is an apocalyptic number.

20102223 is a deficient number, since it is larger than the sum of its proper divisors (6700745).

20102223 is an equidigital number, since it uses as much as digits as its factorization.

20102223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700744.

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

The square root of 20102223 is about 4483.5502673663. The cubic root of 20102223 is about 271.9034358420.

Adding to 20102223 its reverse (32220102), we get a palindrome (52322325).

The spelling of 20102223 in words is "twenty million, one hundred two thousand, two hundred twenty-three".