2121121143 has 12 divisors (see below), whose sum is σ = 3091951720. Its totient is φ = 1401106896.

The previous prime is 2121121141. The next prime is 2121121147. The reversal of 2121121143 is 3411211212.

It is not a de Polignac number, because 2121121143 - 2¹ = 2121121141 is a prime.

It is a super-3 number, since 3×2121121143³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1080121 + ... + 1082082.

Almost surely, 2^2121121143 is an apocalyptic number.

2121121143 is a deficient number, since it is larger than the sum of its proper divisors (970830577).

2121121143 is a wasteful number, since it uses less digits than its factorization.

2121121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162318 (or 2162315 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 2121121143 is about 46055.6309586569. The cubic root of 2121121143 is about 1284.8580731176.

Adding to 2121121143 its reverse (3411211212), we get a palindrome (5532332355).

The spelling of 2121121143 in words is "two billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-three".