2221122011 has 4 divisors (see below), whose sum is σ = 2240778072. Its totient is φ = 2201465952.

The previous prime is 2221121999. The next prime is 2221122019. The reversal of 2221122011 is 1102211222.

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 2221122011 - 2¹⁰ = 2221120987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221122019) 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, 9827861 + ... + 9828086.

It is an arithmetic number, because the mean of its divisors is an integer number (560194518).

Almost surely, 2^2221122011 is an apocalyptic number.

2221122011 is a deficient number, since it is larger than the sum of its proper divisors (19656061).

2221122011 is a wasteful number, since it uses less digits than its factorization.

2221122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19656060.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2221122011 is about 47128.7811321277. The cubic root of 2221122011 is about 1304.7404857732.

Adding to 2221122011 its reverse (1102211222), we get a palindrome (3323333233).

The spelling of 2221122011 in words is "two billion, two hundred twenty-one million, one hundred twenty-two thousand, eleven".