212133430123 has 8 divisors (see below), whose sum is σ = 212645523456. Its totient is φ = 211621429800.

The previous prime is 212133430073. The next prime is 212133430129. The reversal of 212133430123 is 321034331212.

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 212133430123 - 2²¹ = 212131332971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212133430129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7239540 + ... + 7268782.

It is an arithmetic number, because the mean of its divisors is an integer number (26580690432).

Almost surely, 2^212133430123 is an apocalyptic number.

212133430123 is a deficient number, since it is larger than the sum of its proper divisors (512093333).

212133430123 is a wasteful number, since it uses less digits than its factorization.

212133430123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46505.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 212133430123 its reverse (321034331212), we get a palindrome (533167761335).

The spelling of 212133430123 in words is "two hundred twelve billion, one hundred thirty-three million, four hundred thirty thousand, one hundred twenty-three".