211121233123 has 8 divisors (see below), whose sum is σ = 213157874160. Its totient is φ = 209086405920.

The previous prime is 211121233121. The next prime is 211121233181. The reversal of 211121233123 is 321332121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211121233123 - 2¹ = 211121233121 is a prime.

It is a super-2 number, since 2×211121233123² (a number of 23 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 = 211121233094 and 211121233103.

It is not an unprimeable number, because it can be changed into a prime (211121233121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218965 + ... + 685702.

It is an arithmetic number, because the mean of its divisors is an integer number (26644734270).

Almost surely, 2^211121233123 is an apocalyptic number.

211121233123 is a deficient number, since it is larger than the sum of its proper divisors (2036641037).

211121233123 is a wasteful number, since it uses less digits than its factorization.

211121233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906917.

The product of its digits is 432, while the sum is 22.

Adding to 211121233123 its reverse (321332121112), we get a palindrome (532453354235).

The spelling of 211121233123 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred twenty-three".