2113012221 has 16 divisors (see below), whose sum is σ = 2834472960. Its totient is φ = 1400138480.

The previous prime is 2113012189. The next prime is 2113012241. The reversal of 2113012221 is 1222103112.

It is a cyclic number.

It is not a de Polignac number, because 2113012221 - 2⁵ = 2113012189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2113012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113012241) 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 15 ways as a sum of consecutive naturals, for example, 375136 + ... + 380726.

It is an arithmetic number, because the mean of its divisors is an integer number (177154560).

Almost surely, 2^2113012221 is an apocalyptic number.

It is an amenable number.

2113012221 is a deficient number, since it is larger than the sum of its proper divisors (721460739).

2113012221 is a wasteful number, since it uses less digits than its factorization.

2113012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2113012221 is about 45967.5126692755. The cubic root of 2113012221 is about 1283.2186698175.

Adding to 2113012221 its reverse (1222103112), we get a palindrome (3335115333).

The spelling of 2113012221 in words is "two billion, one hundred thirteen million, twelve thousand, two hundred twenty-one".