212112020191 has 8 divisors (see below), whose sum is σ = 212429330624. Its totient is φ = 211794804000.

The previous prime is 212112020171. The next prime is 212112020209. The reversal of 212112020191 is 191020211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212112020191 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 (212112020171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5397385 + ... + 5436541.

It is an arithmetic number, because the mean of its divisors is an integer number (26553666328).

Almost surely, 2^212112020191 is an apocalyptic number.

212112020191 is a deficient number, since it is larger than the sum of its proper divisors (317310433).

212112020191 is an equidigital number, since it uses as much as digits as its factorization.

212112020191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47121.

The product of its (nonzero) digits is 144, while the sum is 22.

It can be divided in two parts, 21211 and 2020191, that added together give a palindrome (2041402).

The spelling of 212112020191 in words is "two hundred twelve billion, one hundred twelve million, twenty thousand, one hundred ninety-one".