212010230123 has 4 divisors (see below), whose sum is σ = 215485807728. Its totient is φ = 208534652520.

The previous prime is 212010230087. The next prime is 212010230137. The reversal of 212010230123 is 321032010212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212010230123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212010230723) 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, 1737788711 + ... + 1737788832.

It is an arithmetic number, because the mean of its divisors is an integer number (53871451932).

Almost surely, 2^212010230123 is an apocalyptic number.

212010230123 is a deficient number, since it is larger than the sum of its proper divisors (3475577605).

212010230123 is an equidigital number, since it uses as much as digits as its factorization.

212010230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475577604.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212010230123 its reverse (321032010212), we get a palindrome (533042240335).

The spelling of 212010230123 in words is "two hundred twelve billion, ten million, two hundred thirty thousand, one hundred twenty-three".