212212321133 has 4 divisors (see below), whose sum is σ = 212213703360. Its totient is φ = 212210938908.

The previous prime is 212212321117. The next prime is 212212321169. The reversal of 212212321133 is 331123212212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212212321133 - 2⁴ = 212212321117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212212321099 and 212212321108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212321333) 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, 427235 + ... + 779072.

It is an arithmetic number, because the mean of its divisors is an integer number (53053425840).

Almost surely, 2^212212321133 is an apocalyptic number.

It is an amenable number.

212212321133 is a deficient number, since it is larger than the sum of its proper divisors (1382227).

212212321133 is a wasteful number, since it uses less digits than its factorization.

212212321133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382226.

The product of its digits is 864, while the sum is 23.

Adding to 212212321133 its reverse (331123212212), we get a palindrome (543335533345).

The spelling of 212212321133 in words is "two hundred twelve billion, two hundred twelve million, three hundred twenty-one thousand, one hundred thirty-three".