20012112223 has 2 divisors, whose sum is σ = 20012112224. Its totient is φ = 20012112222.

The previous prime is 20012112209. The next prime is 20012112229. The reversal of 20012112223 is 32221121002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012112223 - 2⁵ = 20012112191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012112197 and 20012112206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012112229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006056111 + 10006056112.

It is an arithmetic number, because the mean of its divisors is an integer number (10006056112).

Almost surely, 2^20012112223 is an apocalyptic number.

20012112223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012112223 is an equidigital number, since it uses as much as digits as its factorization.

20012112223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20012112223 its reverse (32221121002), we get a palindrome (52233233225).

The spelling of 20012112223 in words is "twenty billion, twelve million, one hundred twelve thousand, two hundred twenty-three".