212101300123 has 4 divisors (see below), whose sum is σ = 212630231448. Its totient is φ = 211572368800.

The previous prime is 212101300109. The next prime is 212101300141. The reversal of 212101300123 is 321003101212.

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

It is a cyclic number.

It is not a de Polignac number, because 212101300123 - 2¹³ = 212101291931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212101300097 and 212101300106.

It is not an unprimeable number, because it can be changed into a prime (212101300153) 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, 264465061 + ... + 264465862.

It is an arithmetic number, because the mean of its divisors is an integer number (53157557862).

Almost surely, 2^212101300123 is an apocalyptic number.

212101300123 is a deficient number, since it is larger than the sum of its proper divisors (528931325).

212101300123 is an equidigital number, since it uses as much as digits as its factorization.

212101300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528931324.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212101300123 its reverse (321003101212), we get a palindrome (533104401335).

The spelling of 212101300123 in words is "two hundred twelve billion, one hundred one million, three hundred thousand, one hundred twenty-three".