212120010011101 has 4 divisors (see below), whose sum is σ = 212142387909600. Its totient is φ = 212097632112604.

The previous prime is 212120010011093. The next prime is 212120010011111. The reversal of 212120010011101 is 101110010021212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212120010011101 - 2³ = 212120010011093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120010011111) 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 3 ways as a sum of consecutive naturals, for example, 11188935031 + ... + 11188953988.

It is an arithmetic number, because the mean of its divisors is an integer number (53035596977400).

Almost surely, 2^{212120010011101} is an apocalyptic number.

It is an amenable number.

212120010011101 is a deficient number, since it is larger than the sum of its proper divisors (22377898499).

212120010011101 is an equidigital number, since it uses as much as digits as its factorization.

212120010011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22377898498.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 212120010011101 its reverse (101110010021212), we get a palindrome (313230020032313).

The spelling of 212120010011101 in words is "two hundred twelve trillion, one hundred twenty billion, ten million, eleven thousand, one hundred one".