212121223223311 has 8 divisors (see below), whose sum is σ = 214505842636800. Its totient is φ = 209736631251840.

The previous prime is 212121223223267. The next prime is 212121223223353. The reversal of 212121223223311 is 113322322121212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212121223223311 - 2³³ = 212112633288719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212121223223311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121223263311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8888050 + ... + 22433008.

It is an arithmetic number, because the mean of its divisors is an integer number (26813230329600).

Almost surely, 2^{212121223223311} is an apocalyptic number.

212121223223311 is a deficient number, since it is larger than the sum of its proper divisors (2384619413489).

212121223223311 is a wasteful number, since it uses less digits than its factorization.

212121223223311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13721009.

The product of its digits is 3456, while the sum is 28.

Adding to 212121223223311 its reverse (113322322121212), we get a palindrome (325443545344523).

The spelling of 212121223223311 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred twenty-three million, two hundred twenty-three thousand, three hundred eleven".