2221011091 has 8 divisors (see below), whose sum is σ = 2414213424. Its totient is φ = 2031002400.

The previous prime is 2221011043. The next prime is 2221011101. The reversal of 2221011091 is 1901101222.

It is a happy number.

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-2221011091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221012091) 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 7 ways as a sum of consecutive naturals, for example, 796960 + ... + 799741.

It is an arithmetic number, because the mean of its divisors is an integer number (301776678).

Almost surely, 2^2221011091 is an apocalyptic number.

2221011091 is a deficient number, since it is larger than the sum of its proper divisors (193202333).

2221011091 is a wasteful number, since it uses less digits than its factorization.

2221011091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596821.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2221011091 is about 47127.6043418292. The cubic root of 2221011091 is about 1304.7187663864.

The spelling of 2221011091 in words is "two billion, two hundred twenty-one million, eleven thousand, ninety-one".