212001112211 has 4 divisors (see below), whose sum is σ = 242286985392. Its totient is φ = 181715239032.

The previous prime is 212001112199. The next prime is 212001112223. The reversal of 212001112211 is 112211100212.

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

It is an interprime number because it is at equal distance from previous prime (212001112199) and next prime (212001112223).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212001112211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212001112291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15142936580 + ... + 15142936593.

It is an arithmetic number, because the mean of its divisors is an integer number (60571746348).

Almost surely, 2^212001112211 is an apocalyptic number.

212001112211 is a deficient number, since it is larger than the sum of its proper divisors (30285873181).

212001112211 is an equidigital number, since it uses as much as digits as its factorization.

212001112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30285873180.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212001112211 its reverse (112211100212), we get a palindrome (324212212423).

The spelling of 212001112211 in words is "two hundred twelve billion, one million, one hundred twelve thousand, two hundred eleven".