212231033311 has 4 divisors (see below), whose sum is σ = 231524763624. Its totient is φ = 192937303000.

The previous prime is 212231033269. The next prime is 212231033389. The reversal of 212231033311 is 113330132212.

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 212231033311 - 2¹⁵ = 212231000543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212231033111) 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, 9646865140 + ... + 9646865161.

It is an arithmetic number, because the mean of its divisors is an integer number (57881190906).

Almost surely, 2^212231033311 is an apocalyptic number.

212231033311 is a deficient number, since it is larger than the sum of its proper divisors (19293730313).

212231033311 is a wasteful number, since it uses less digits than its factorization.

212231033311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19293730312.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 212231033311 its reverse (113330132212), we get a palindrome (325561165523).

The spelling of 212231033311 in words is "two hundred twelve billion, two hundred thirty-one million, thirty-three thousand, three hundred eleven".