2122111121 has 8 divisors (see below), whose sum is σ = 2405632320. Its totient is φ = 1855773072.

The previous prime is 2122111099. The next prime is 2122111129. The reversal of 2122111121 is 1211112212.

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 2122111121 - 2¹⁸ = 2121848977 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2122111096 and 2122111105.

It is not an unprimeable number, because it can be changed into a prime (2122111129) 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, 4295525 + ... + 4296018.

It is an arithmetic number, because the mean of its divisors is an integer number (300704040).

Almost surely, 2^2122111121 is an apocalyptic number.

It is an amenable number.

2122111121 is a deficient number, since it is larger than the sum of its proper divisors (283521199).

2122111121 is a wasteful number, since it uses less digits than its factorization.

2122111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591575.

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

The square root of 2122111121 is about 46066.3773374899. The cubic root of 2122111121 is about 1285.0579333649.

Adding to 2122111121 its reverse (1211112212), we get a palindrome (3333223333).

The spelling of 2122111121 in words is "two billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twenty-one".