211232120231 has 16 divisors (see below), whose sum is σ = 232926284448. Its totient is φ = 189956592000.

The previous prime is 211232120167. The next prime is 211232120243. The reversal of 211232120231 is 132021232112.

It is a cyclic number.

It is not a de Polignac number, because 211232120231 - 2⁶ = 211232120167 is a prime.

It is a super-2 number, since 2×211232120231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211232120261) 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, 1155881 + ... + 1326093.

It is an arithmetic number, because the mean of its divisors is an integer number (14557892778).

Almost surely, 2^211232120231 is an apocalyptic number.

211232120231 is a deficient number, since it is larger than the sum of its proper divisors (21694164217).

211232120231 is a wasteful number, since it uses less digits than its factorization.

211232120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171442.

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

Adding to 211232120231 its reverse (132021232112), we get a palindrome (343253352343).

The spelling of 211232120231 in words is "two hundred eleven billion, two hundred thirty-two million, one hundred twenty thousand, two hundred thirty-one".