212241213231 has 4 divisors (see below), whose sum is σ = 282988284312. Its totient is φ = 141494142152.

The previous prime is 212241213203. The next prime is 212241213253. The reversal of 212241213231 is 132312142212.

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

It is a cyclic number.

It is not a de Polignac number, because 212241213231 - 2⁷ = 212241213103 is a prime.

It is a super-2 number, since 2×212241213231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212241214231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35373535536 + ... + 35373535541.

It is an arithmetic number, because the mean of its divisors is an integer number (70747071078).

Almost surely, 2^212241213231 is an apocalyptic number.

212241213231 is a deficient number, since it is larger than the sum of its proper divisors (70747071081).

212241213231 is an equidigital number, since it uses as much as digits as its factorization.

212241213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70747071080.

The product of its digits is 1152, while the sum is 24.

Adding to 212241213231 its reverse (132312142212), we get a palindrome (344553355443).

The spelling of 212241213231 in words is "two hundred twelve billion, two hundred forty-one million, two hundred thirteen thousand, two hundred thirty-one".