211123221233 has 24 divisors (see below), whose sum is σ = 223350125856. Its totient is φ = 199508400000.

The previous prime is 211123221209. The next prime is 211123221347. The reversal of 211123221233 is 332122321112.

It is not a de Polignac number, because 211123221233 - 2⁸ = 211123220977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211123221199 and 211123221208.

It is not an unprimeable number, because it can be changed into a prime (211123227233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8029358 + ... + 8055608.

It is an arithmetic number, because the mean of its divisors is an integer number (9306255244).

Almost surely, 2^211123221233 is an apocalyptic number.

It is an amenable number.

211123221233 is a deficient number, since it is larger than the sum of its proper divisors (12226904623).

211123221233 is a wasteful number, since it uses less digits than its factorization.

211123221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26513 (or 26484 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 211123221233 its reverse (332122321112), we get a palindrome (543245542345).

The spelling of 211123221233 in words is "two hundred eleven billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred thirty-three".