212221323233 has 4 divisors (see below), whose sum is σ = 224704930500. Its totient is φ = 199737715968.

The previous prime is 212221323229. The next prime is 212221323239. The reversal of 212221323233 is 332323122212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 195884137744 + 16337185489 = 442588^2 + 127817^2 .

It is a cyclic number.

It is not a de Polignac number, because 212221323233 - 2² = 212221323229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221323239) 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, 6241803608 + ... + 6241803641.

It is an arithmetic number, because the mean of its divisors is an integer number (56176232625).

Almost surely, 2^212221323233 is an apocalyptic number.

It is an amenable number.

212221323233 is a deficient number, since it is larger than the sum of its proper divisors (12483607267).

212221323233 is a wasteful number, since it uses less digits than its factorization.

212221323233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12483607266.

The product of its digits is 5184, while the sum is 26.

Adding to 212221323233 its reverse (332323122212), we get a palindrome (544544445445).

The spelling of 212221323233 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred thirty-three".