211333331213 has 16 divisors (see below), whose sum is σ = 217448364672. Its totient is φ = 205264800000.

The previous prime is 211333331203. The next prime is 211333331227. The reversal of 211333331213 is 312133333112.

It is a cyclic number.

It is not a de Polignac number, because 211333331213 - 2¹⁶ = 211333265677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211333331203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37796048 + ... + 37801638.

It is an arithmetic number, because the mean of its divisors is an integer number (13590522792).

Almost surely, 2^211333331213 is an apocalyptic number.

It is an amenable number.

211333331213 is a deficient number, since it is larger than the sum of its proper divisors (6115033459).

211333331213 is a wasteful number, since it uses less digits than its factorization.

211333331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9556.

The product of its digits is 2916, while the sum is 26.

Adding to 211333331213 its reverse (312133333112), we get a palindrome (523466664325).

The spelling of 211333331213 in words is "two hundred eleven billion, three hundred thirty-three million, three hundred thirty-one thousand, two hundred thirteen".