2211121121 has 8 divisors (see below), whose sum is σ = 2446106688. Its totient is φ = 1981798000.

The previous prime is 2211121109. The next prime is 2211121127. The reversal of 2211121121 is 1211211122.

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

It is a cyclic number.

It is not a de Polignac number, because 2211121121 - 2¹⁸ = 2210858977 is a prime.

It is a super-2 number, since 2×2211121121² = 9778113223464593282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2211121096 and 2211121105.

It is not an unprimeable number, because it can be changed into a prime (2211121127) 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, 1414790 + ... + 1416351.

It is an arithmetic number, because the mean of its divisors is an integer number (305763336).

Almost surely, 2^2211121121 is an apocalyptic number.

It is an amenable number.

2211121121 is a deficient number, since it is larger than the sum of its proper divisors (234985567).

2211121121 is a wasteful number, since it uses less digits than its factorization.

2211121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831223.

The product of its digits is 16, while the sum is 14.

The square root of 2211121121 is about 47022.5597027639. The cubic root of 2211121121 is about 1302.7792848672.

Adding to 2211121121 its reverse (1211211122), we get a palindrome (3422332243).

Subtracting from 2211121121 its reverse (1211211122), we obtain a palindrome (999909999).

The spelling of 2211121121 in words is "two billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-one".