212211211133 has 4 divisors (see below), whose sum is σ = 212221572828. Its totient is φ = 212200849440.

The previous prime is 212211211127. The next prime is 212211211139. The reversal of 212211211133 is 331112112212.

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 (212211211127) and next prime (212211211139).

It can be written as a sum of positive squares in 2 ways, for example, as 173937375364 + 38273835769 = 417058^2 + 195637^2 .

It is a cyclic number.

It is not a de Polignac number, because 212211211133 - 2⁴ = 212211211117 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 (212211211139) 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, 5150066 + ... + 5191107.

It is an arithmetic number, because the mean of its divisors is an integer number (53055393207).

Almost surely, 2^212211211133 is an apocalyptic number.

It is an amenable number.

212211211133 is a deficient number, since it is larger than the sum of its proper divisors (10361695).

212211211133 is a wasteful number, since it uses less digits than its factorization.

212211211133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10361694.

The product of its digits is 144, while the sum is 20.

Adding to 212211211133 its reverse (331112112212), we get a palindrome (543323323345).

The spelling of 212211211133 in words is "two hundred twelve billion, two hundred eleven million, two hundred eleven thousand, one hundred thirty-three".