212101123221323 has 16 divisors (see below), whose sum is σ = 248345122037760. Its totient is φ = 177353536239936.

The previous prime is 212101123221319. The next prime is 212101123221347. The reversal of 212101123221323 is 323122321101212.

It is not a de Polignac number, because 212101123221323 - 2² = 212101123221319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212101123221292 and 212101123221301.

It is not an unprimeable number, because it can be changed into a prime (212101123221313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435266315 + ... + 435753332.

It is an arithmetic number, because the mean of its divisors is an integer number (15521570127360).

Almost surely, 2^{212101123221323} is an apocalyptic number.

212101123221323 is a deficient number, since it is larger than the sum of its proper divisors (36243998816437).

212101123221323 is an equidigital number, since it uses as much as digits as its factorization.

212101123221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871020506.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 212101123221323 its reverse (323122321101212), we get a palindrome (535223444322535).

The spelling of 212101123221323 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty-three".