212120020223 has 4 divisors (see below), whose sum is σ = 212120944320. Its totient is φ = 212119096128.

The previous prime is 212120020183. The next prime is 212120020247. The reversal of 212120020223 is 322020021212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212120020223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120620223) 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, 175538 + ... + 674576.

It is an arithmetic number, because the mean of its divisors is an integer number (53030236080).

Almost surely, 2^212120020223 is an apocalyptic number.

212120020223 is a deficient number, since it is larger than the sum of its proper divisors (924097).

212120020223 is an equidigital number, since it uses as much as digits as its factorization.

212120020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924096.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 212120020223 its reverse (322020021212), we get a palindrome (534140041435).

The spelling of 212120020223 in words is "two hundred twelve billion, one hundred twenty million, twenty thousand, two hundred twenty-three".