212100100123 has 8 divisors (see below), whose sum is σ = 213000580496. Its totient is φ = 211199788800.

The previous prime is 212100100111. The next prime is 212100100129. The reversal of 212100100123 is 321001001212.

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 212100100123 - 2²⁹ = 211563229211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100100129) 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, 2906815 + ... + 2978887.

It is an arithmetic number, because the mean of its divisors is an integer number (26625072562).

Almost surely, 2^212100100123 is an apocalyptic number.

212100100123 is a deficient number, since it is larger than the sum of its proper divisors (900480373).

212100100123 is a wasteful number, since it uses less digits than its factorization.

212100100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84525.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 212100100123 its reverse (321001001212), we get a palindrome (533101101335).

The spelling of 212100100123 in words is "two hundred twelve billion, one hundred million, one hundred thousand, one hundred twenty-three".