2201121191 has 4 divisors (see below), whose sum is σ = 2202330432. Its totient is φ = 2199911952.

The previous prime is 2201121173. The next prime is 2201121259. The reversal of 2201121191 is 1911211022.

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

It is a cyclic number.

It is not a de Polignac number, because 2201121191 - 2²² = 2196926887 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 (2201121491) 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, 601886 + ... + 605531.

It is an arithmetic number, because the mean of its divisors is an integer number (550582608).

Almost surely, 2^2201121191 is an apocalyptic number.

2201121191 is a deficient number, since it is larger than the sum of its proper divisors (1209241).

2201121191 is a wasteful number, since it uses less digits than its factorization.

2201121191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209240.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 2201121191 is about 46916.1080120677. The cubic root of 2201121191 is about 1300.8123504541.

The spelling of 2201121191 in words is "two billion, two hundred one million, one hundred twenty-one thousand, one hundred ninety-one".