211223333121 has 16 divisors (see below), whose sum is σ = 290840816448. Its totient is φ = 136252756800.

The previous prime is 211223333033. The next prime is 211223333147. The reversal of 211223333121 is 121333322112.

It is not a de Polignac number, because 211223333121 - 2¹⁰ = 211223332097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211223333091 and 211223333100.

It is not an unprimeable number, because it can be changed into a prime (211223333921) 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, 5236575 + ... + 5276756.

It is an arithmetic number, because the mean of its divisors is an integer number (18177551028).

Almost surely, 2^211223333121 is an apocalyptic number.

It is an amenable number.

211223333121 is a deficient number, since it is larger than the sum of its proper divisors (79617483327).

211223333121 is a wasteful number, since it uses less digits than its factorization.

211223333121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10513552.

The product of its digits is 1296, while the sum is 24.

Adding to 211223333121 its reverse (121333322112), we get a palindrome (332556655233).

The spelling of 211223333121 in words is "two hundred eleven billion, two hundred twenty-three million, three hundred thirty-three thousand, one hundred twenty-one".