20212203223 has 4 divisors (see below), whose sum is σ = 20439306720. Its totient is φ = 19985099728.

The previous prime is 20212203217. The next prime is 20212203229. The reversal of 20212203223 is 32230221202.

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 (20212203217) and next prime (20212203229).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212203223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20212203223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212203229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113551615 + ... + 113551792.

It is an arithmetic number, because the mean of its divisors is an integer number (5109826680).

Almost surely, 2^20212203223 is an apocalyptic number.

20212203223 is a deficient number, since it is larger than the sum of its proper divisors (227103497).

20212203223 is an equidigital number, since it uses as much as digits as its factorization.

20212203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227103496.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20212203223 its reverse (32230221202), we get a palindrome (52442424425).

The spelling of 20212203223 in words is "twenty billion, two hundred twelve million, two hundred three thousand, two hundred twenty-three".