212111210013 has 4 divisors (see below), whose sum is σ = 282814946688. Its totient is φ = 141407473340.

The previous prime is 212111209969. The next prime is 212111210023. The reversal of 212111210013 is 310012111212.

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 212111210013 - 2⁸ = 212111209757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212111209974 and 212111210001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111210023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35351868333 + ... + 35351868338.

It is an arithmetic number, because the mean of its divisors is an integer number (70703736672).

Almost surely, 2^212111210013 is an apocalyptic number.

It is an amenable number.

212111210013 is a deficient number, since it is larger than the sum of its proper divisors (70703736675).

212111210013 is an equidigital number, since it uses as much as digits as its factorization.

212111210013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70703736674.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 212111210013 its reverse (310012111212), we get a palindrome (522123321225).

The spelling of 212111210013 in words is "two hundred twelve billion, one hundred eleven million, two hundred ten thousand, thirteen".