211211233120231 has 12 divisors (see below), whose sum is σ = 226463138969688. Its totient is φ = 196929220076672.

The previous prime is 211211233120189. The next prime is 211211233120249. The reversal of 211211233120231 is 132021332112112.

It is a de Polignac number, because none of the positive numbers 2^k-211211233120231 is a prime.

It is a super-2 number, since 2×211211233120231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211233120196 and 211211233120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211233120831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3415084576 + ... + 3415146421.

It is an arithmetic number, because the mean of its divisors is an integer number (18871928247474).

Almost surely, 2^{211211233120231} is an apocalyptic number.

211211233120231 is a deficient number, since it is larger than the sum of its proper divisors (15251905849457).

211211233120231 is a wasteful number, since it uses less digits than its factorization.

211211233120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6830231138 (or 6830231121 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 211211233120231 its reverse (132021332112112), we get a palindrome (343232565232343).

The spelling of 211211233120231 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred thirty-three million, one hundred twenty thousand, two hundred thirty-one".