213112233123 has 4 divisors (see below), whose sum is σ = 284149644168. Its totient is φ = 142074822080.

The previous prime is 213112233083. The next prime is 213112233157. The reversal of 213112233123 is 321332211312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213112233123 - 2²⁰ = 213111184547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213112233093 and 213112233102.

It is not an unprimeable number, because it can be changed into a prime (213112213123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35518705518 + ... + 35518705523.

It is an arithmetic number, because the mean of its divisors is an integer number (71037411042).

Almost surely, 2^213112233123 is an apocalyptic number.

213112233123 is a deficient number, since it is larger than the sum of its proper divisors (71037411045).

213112233123 is an equidigital number, since it uses as much as digits as its factorization.

213112233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71037411044.

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

Adding to 213112233123 its reverse (321332211312), we get a palindrome (534444444435).

The spelling of 213112233123 in words is "two hundred thirteen billion, one hundred twelve million, two hundred thirty-three thousand, one hundred twenty-three".