2211110121 has 32 divisors (see below), whose sum is σ = 3313668096. Its totient is φ = 1299672000.

The previous prime is 2211109997. The next prime is 2211110131. The reversal of 2211110121 is 1210111122.

It is not a de Polignac number, because 2211110121 - 2⁹ = 2211109609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211110097 and 2211110106.

It is not an unprimeable number, because it can be changed into a prime (2211110131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401416 + ... + 406886.

It is an arithmetic number, because the mean of its divisors is an integer number (103552128).

Almost surely, 2^2211110121 is an apocalyptic number.

It is an amenable number.

2211110121 is a deficient number, since it is larger than the sum of its proper divisors (1102557975).

2211110121 is a wasteful number, since it uses less digits than its factorization.

2211110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2211110121 is about 47022.4427374844. The cubic root of 2211110121 is about 1302.7771244856. Note that the first 3 decimals are identical.

Adding to 2211110121 its reverse (1210111122), we get a palindrome (3421221243).

It can be divided in two parts, 22111101 and 21, that added together give a palindrome (22111122).

The spelling of 2211110121 in words is "two billion, two hundred eleven million, one hundred ten thousand, one hundred twenty-one".