2213121111 has 8 divisors (see below), whose sum is σ = 3079125120. Its totient is φ = 1411265592.

The previous prime is 2213121091. The next prime is 2213121137. The reversal of 2213121111 is 1111213122.

2213121111 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2213121111 - 2⁹ = 2213120599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213121151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16037041 + ... + 16037178.

It is an arithmetic number, because the mean of its divisors is an integer number (384890640).

Almost surely, 2^2213121111 is an apocalyptic number.

2213121111 is a deficient number, since it is larger than the sum of its proper divisors (866004009).

2213121111 is a wasteful number, since it uses less digits than its factorization.

2213121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32074245.

The product of its digits is 24, while the sum is 15.

The square root of 2213121111 is about 47043.8211777062. The cubic root of 2213121111 is about 1303.1719605295.

Adding to 2213121111 its reverse (1111213122), we get a palindrome (3324334233).

The spelling of 2213121111 in words is "two billion, two hundred thirteen million, one hundred twenty-one thousand, one hundred eleven".