2991222011 has 4 divisors (see below), whose sum is σ = 2997711024. Its totient is φ = 2984733000.

The previous prime is 2991222007. The next prime is 2991222071. The reversal of 2991222011 is 1102221992.

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 2991222011 - 2² = 2991222007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2991222071) 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, 3243815 + ... + 3244736.

It is an arithmetic number, because the mean of its divisors is an integer number (749427756).

Almost surely, 2^2991222011 is an apocalyptic number.

2991222011 is a deficient number, since it is larger than the sum of its proper divisors (6489013).

2991222011 is an equidigital number, since it uses as much as digits as its factorization.

2991222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489012.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 2991222011 is about 54692.0653385845. The cubic root of 2991222011 is about 1440.8415237820.

The spelling of 2991222011 in words is "two billion, nine hundred ninety-one million, two hundred twenty-two thousand, eleven".