20020120223 has 4 divisors (see below), whose sum is σ = 20020547280. Its totient is φ = 20019693168.

The previous prime is 20020120177. The next prime is 20020120243. The reversal of 20020120223 is 32202102002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020120223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020120198 and 20020120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020120243) 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, 133115 + ... + 240332.

It is an arithmetic number, because the mean of its divisors is an integer number (5005136820).

Almost surely, 2^20020120223 is an apocalyptic number.

20020120223 is a deficient number, since it is larger than the sum of its proper divisors (427057).

20020120223 is an equidigital number, since it uses as much as digits as its factorization.

20020120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427056.

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

Adding to 20020120223 its reverse (32202102002), we get a palindrome (52222222225).

The spelling of 20020120223 in words is "twenty billion, twenty million, one hundred twenty thousand, two hundred twenty-three".