212320231211 has 16 divisors (see below), whose sum is σ = 234621370368. Its totient is φ = 190529376000.

The previous prime is 212320231183. The next prime is 212320231213. The reversal of 212320231211 is 112132023212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212320231211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212320231213) 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, 148886 + ... + 668436.

It is an arithmetic number, because the mean of its divisors is an integer number (14663835648).

Almost surely, 2^212320231211 is an apocalyptic number.

212320231211 is a deficient number, since it is larger than the sum of its proper divisors (22301139157).

212320231211 is a wasteful number, since it uses less digits than its factorization.

212320231211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520042.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212320231211 its reverse (112132023212), we get a palindrome (324452254423).

The spelling of 212320231211 in words is "two hundred twelve billion, three hundred twenty million, two hundred thirty-one thousand, two hundred eleven".