2212012191 has 4 divisors (see below), whose sum is σ = 2949349592. Its totient is φ = 1474674792.

The previous prime is 2212012147. The next prime is 2212012193. The reversal of 2212012191 is 1912102122.

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

It is not a de Polignac number, because 2212012191 - 2¹⁰ = 2212011167 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 (2212012193) 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, 368668696 + ... + 368668701.

It is an arithmetic number, because the mean of its divisors is an integer number (737337398).

Almost surely, 2^2212012191 is an apocalyptic number.

2212012191 is a deficient number, since it is larger than the sum of its proper divisors (737337401).

2212012191 is an equidigital number, since it uses as much as digits as its factorization.

2212012191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737337400.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2212012191 is about 47032.0336685540. The cubic root of 2212012191 is about 1302.9542657280.

The spelling of 2212012191 in words is "two billion, two hundred twelve million, twelve thousand, one hundred ninety-one".