212130112123 has 8 divisors (see below), whose sum is σ = 215309658960. Its totient is φ = 208974205440.

The previous prime is 212130112091. The next prime is 212130112151. The reversal of 212130112123 is 321211031212.

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 212130112123 - 2⁵ = 212130112091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212130112123.

It is not an unprimeable number, because it can be changed into a prime (212130112163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5891958 + ... + 5927851.

It is an arithmetic number, because the mean of its divisors is an integer number (26913707370).

Almost surely, 2^212130112123 is an apocalyptic number.

212130112123 is a deficient number, since it is larger than the sum of its proper divisors (3179546837).

212130112123 is a wasteful number, since it uses less digits than its factorization.

212130112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11820077.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212130112123 its reverse (321211031212), we get a palindrome (533341143335).

The spelling of 212130112123 in words is "two hundred twelve billion, one hundred thirty million, one hundred twelve thousand, one hundred twenty-three".