211121320330231 has 16 divisors (see below), whose sum is σ = 215239789486080. Its totient is φ = 207036673258240.

The previous prime is 211121320330213. The next prime is 211121320330253. The reversal of 211121320330231 is 132033023121112.

It is a cyclic number.

It is not a de Polignac number, because 211121320330231 - 2²⁷ = 211121186112503 is a prime.

It is a super-2 number, since 2×211121320330231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211121320330196 and 211121320330205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121320330031) 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, 7435911 + ... + 21852583.

It is an arithmetic number, because the mean of its divisors is an integer number (13452486842880).

Almost surely, 2^{211121320330231} is an apocalyptic number.

211121320330231 is a deficient number, since it is larger than the sum of its proper divisors (4118469155849).

211121320330231 is a wasteful number, since it uses less digits than its factorization.

211121320330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14417846.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 211121320330231 its reverse (132033023121112), we get a palindrome (343154343451343).

The spelling of 211121320330231 in words is "two hundred eleven trillion, one hundred twenty-one billion, three hundred twenty million, three hundred thirty thousand, two hundred thirty-one".