212110133123 has 24 divisors (see below), whose sum is σ = 271019185920. Its totient is φ = 164751103440.

The previous prime is 212110133107. The next prime is 212110133149. The reversal of 212110133123 is 321331011212.

It is a happy number.

It is not a de Polignac number, because 212110133123 - 2⁴ = 212110133107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212110133095 and 212110133104.

It is not an unprimeable number, because it can be changed into a prime (212110133153) 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, 4931423 + ... + 4974248.

It is an arithmetic number, because the mean of its divisors is an integer number (11292466080).

Almost surely, 2^212110133123 is an apocalyptic number.

212110133123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212110133123 is a deficient number, since it is larger than the sum of its proper divisors (58909052797).

212110133123 is a wasteful number, since it uses less digits than its factorization.

212110133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905727 (or 9905720 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 212110133123 its reverse (321331011212), we get a palindrome (533441144335).

The spelling of 212110133123 in words is "two hundred twelve billion, one hundred ten million, one hundred thirty-three thousand, one hundred twenty-three".