2201212191 has 4 divisors (see below), whose sum is σ = 2934949592. Its totient is φ = 1467474792.

The previous prime is 2201212151. The next prime is 2201212231. The reversal of 2201212191 is 1912121022.

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 (2201212151) and next prime (2201212231).

It is not a de Polignac number, because 2201212191 - 2¹⁰ = 2201211167 is a prime.

It is a super-4 number, since 4×2201212191⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201212151) 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, 366868696 + ... + 366868701.

It is an arithmetic number, because the mean of its divisors is an integer number (733737398).

Almost surely, 2^2201212191 is an apocalyptic number.

2201212191 is a deficient number, since it is larger than the sum of its proper divisors (733737401).

2201212191 is an equidigital number, since it uses as much as digits as its factorization.

2201212191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733737400.

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

The square root of 2201212191 is about 46917.0778182103. The cubic root of 2201212191 is about 1300.8302765142.

The spelling of 2201212191 in words is "two billion, two hundred one million, two hundred twelve thousand, one hundred ninety-one".