2113221011 has 4 divisors (see below), whose sum is σ = 2305332024. Its totient is φ = 1921110000.

The previous prime is 2113220971. The next prime is 2113221013. The reversal of 2113221011 is 1101223112.

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 2113221011 - 2²² = 2109026707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96055490 + ... + 96055511.

It is an arithmetic number, because the mean of its divisors is an integer number (576333006).

Almost surely, 2^2113221011 is an apocalyptic number.

2113221011 is a deficient number, since it is larger than the sum of its proper divisors (192111013).

2113221011 is a wasteful number, since it uses less digits than its factorization.

2113221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192111012.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2113221011 is about 45969.7836736263. The cubic root of 2113221011 is about 1283.2609340315.

Adding to 2113221011 its reverse (1101223112), we get a palindrome (3214444123).

The spelling of 2113221011 in words is "two billion, one hundred thirteen million, two hundred twenty-one thousand, eleven".