212100011113 has 4 divisors (see below), whose sum is σ = 212102238420. Its totient is φ = 212097783808.

The previous prime is 212100011111. The next prime is 212100011161. The reversal of 212100011113 is 311110001212.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40117285849 + 171982725264 = 200293^2 + 414708^2 .

It is a cyclic number.

It is not a de Polignac number, because 212100011113 - 2¹ = 212100011111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212100011093 and 212100011102.

It is not an unprimeable number, because it can be changed into a prime (212100011111) 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, 964120 + ... + 1163497.

It is an arithmetic number, because the mean of its divisors is an integer number (53025559605).

Almost surely, 2^212100011113 is an apocalyptic number.

It is an amenable number.

212100011113 is a deficient number, since it is larger than the sum of its proper divisors (2227307).

212100011113 is an equidigital number, since it uses as much as digits as its factorization.

212100011113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227306.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 212100011113 its reverse (311110001212), we get a palindrome (523210012325).

Subtracting 212100011113 from its reverse (311110001212), we obtain a palindrome (99009990099).

The spelling of 212100011113 in words is "two hundred twelve billion, one hundred million, eleven thousand, one hundred thirteen".