212313222133 has 4 divisors (see below), whose sum is σ = 212316560748. Its totient is φ = 212309883520.

The previous prime is 212313222131. The next prime is 212313222137. The reversal of 212313222133 is 331222313212.

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 170885504689 + 41427717444 = 413383^2 + 203538^2 .

It is a cyclic number.

It is not a de Polignac number, because 212313222133 - 2¹ = 212313222131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212313222098 and 212313222107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313222131) 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, 1572028 + ... + 1701733.

It is an arithmetic number, because the mean of its divisors is an integer number (53079140187).

Almost surely, 2^212313222133 is an apocalyptic number.

It is an amenable number.

212313222133 is a deficient number, since it is larger than the sum of its proper divisors (3338615).

212313222133 is an equidigital number, since it uses as much as digits as its factorization.

212313222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338614.

The product of its digits is 2592, while the sum is 25.

Adding to 212313222133 its reverse (331222313212), we get a palindrome (543535535345).

The spelling of 212313222133 in words is "two hundred twelve billion, three hundred thirteen million, two hundred twenty-two thousand, one hundred thirty-three".