2011220099 has 16 divisors (see below), whose sum is σ = 2349388800. Its totient is φ = 1685825664.

The previous prime is 2011220069. The next prime is 2011220117. The reversal of 2011220099 is 9900221102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2011220099 - 2²⁰ = 2010171523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011220009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649547 + ... + 652635.

It is an arithmetic number, because the mean of its divisors is an integer number (146836800).

Almost surely, 2^2011220099 is an apocalyptic number.

2011220099 is a deficient number, since it is larger than the sum of its proper divisors (338168701).

2011220099 is a wasteful number, since it uses less digits than its factorization.

2011220099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2011220099 is about 44846.6286246804. The cubic root of 2011220099 is about 1262.2727308319.

The spelling of 2011220099 in words is "two billion, eleven million, two hundred twenty thousand, ninety-nine".