2211323121 has 12 divisors (see below), whose sum is σ = 3650438272. Its totient is φ = 1263613176.

The previous prime is 2211323089. The next prime is 2211323143. The reversal of 2211323121 is 1213231122.

2211323121 is a `hidden beast` number, since 221 + 1 + 323 + 121 = 666.

2211323121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2211323121 - 2⁵ = 2211323089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211323094 and 2211323103.

It is not an unprimeable number, because it can be changed into a prime (2211323321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17550121 + ... + 17550246.

Almost surely, 2^2211323121 is an apocalyptic number.

2211323121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2211323121 is a deficient number, since it is larger than the sum of its proper divisors (1439115151).

2211323121 is a wasteful number, since it uses less digits than its factorization.

2211323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35100380 (or 35100377 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2211323121 is about 47024.7075588993. The cubic root of 2211323121 is about 1302.8189560547.

Adding to 2211323121 its reverse (1213231122), we get a palindrome (3424554243).

The spelling of 2211323121 in words is "two billion, two hundred eleven million, three hundred twenty-three thousand, one hundred twenty-one".