212221120311 has 20 divisors (see below), whose sum is σ = 320160514344. Its totient is φ = 140079942000.

The previous prime is 212221120303. The next prime is 212221120357. The reversal of 212221120311 is 113021122212.

212221120311 is a `hidden beast` number, since 2 + 12 + 221 + 120 + 311 = 666.

It is not a de Polignac number, because 212221120311 - 2³ = 212221120303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221120301) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12962185 + ... + 12978546.

Almost surely, 2^212221120311 is an apocalyptic number.

212221120311 is a deficient number, since it is larger than the sum of its proper divisors (107939394033).

212221120311 is a wasteful number, since it uses less digits than its factorization.

212221120311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25940844 (or 25940835 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212221120311 its reverse (113021122212), we get a palindrome (325242242523).

The spelling of 212221120311 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred twenty thousand, three hundred eleven".