213124414123 has 4 divisors (see below), whose sum is σ = 213125363568. Its totient is φ = 213123464680.

The previous prime is 213124414099. The next prime is 213124414127. The reversal of 213124414123 is 321414421312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213124414123 - 2⁵ = 213124414091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213124414091 and 213124414100.

It is not an unprimeable number, because it can be changed into a prime (213124414127) 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, 71433 + ... + 656773.

It is an arithmetic number, because the mean of its divisors is an integer number (53281340892).

Almost surely, 2^213124414123 is an apocalyptic number.

213124414123 is a deficient number, since it is larger than the sum of its proper divisors (949445).

213124414123 is an equidigital number, since it uses as much as digits as its factorization.

213124414123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949444.

The product of its digits is 4608, while the sum is 28.

Adding to 213124414123 its reverse (321414421312), we get a palindrome (534538835435).

The spelling of 213124414123 in words is "two hundred thirteen billion, one hundred twenty-four million, four hundred fourteen thousand, one hundred twenty-three".