211211212333213 has 4 divisors (see below), whose sum is σ = 211253564696800. Its totient is φ = 211168859969628.

The previous prime is 211211212333171. The next prime is 211211212333237. The reversal of 211211212333213 is 312333212112112.

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 a de Polignac number, because none of the positive numbers 2^k-211211212333213 is a prime.

It is a super-2 number, since 2×211211212333213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211212333013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21176174313 + ... + 21176184286.

It is an arithmetic number, because the mean of its divisors is an integer number (52813391174200).

Almost surely, 2^{211211212333213} is an apocalyptic number.

It is an amenable number.

211211212333213 is a deficient number, since it is larger than the sum of its proper divisors (42352363587).

211211212333213 is an equidigital number, since it uses as much as digits as its factorization.

211211212333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42352363586.

The product of its digits is 2592, while the sum is 28.

Adding to 211211212333213 its reverse (312333212112112), we get a palindrome (523544424445325).

The spelling of 211211212333213 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twelve million, three hundred thirty-three thousand, two hundred thirteen".