213123233125 has 40 divisors (see below), whose sum is σ = 296711521920. Its totient is φ = 151700640000.

The previous prime is 213123233123. The next prime is 213123233159. The reversal of 213123233125 is 521332321312.

It is not a de Polignac number, because 213123233125 - 2¹ = 213123233123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213123233093 and 213123233102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123233123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6660 + ... + 652909.

It is an arithmetic number, because the mean of its divisors is an integer number (7417788048).

Almost surely, 2^213123233125 is an apocalyptic number.

213123233125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213123233125 is a deficient number, since it is larger than the sum of its proper divisors (83588288795).

213123233125 is an equidigital number, since it uses as much as digits as its factorization.

213123233125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659647 (or 659632 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

Adding to 213123233125 its reverse (521332321312), we get a palindrome (734455554437).

The spelling of 213123233125 in words is "two hundred thirteen billion, one hundred twenty-three million, two hundred thirty-three thousand, one hundred twenty-five".