2121151124 has 12 divisors (see below), whose sum is σ = 3767418144. Its totient is φ = 1044745944.

The previous prime is 2121151121. The next prime is 2121151157. The reversal of 2121151124 is 4211511212.

It is a junction number, because it is equal to n+sod(n) for n = 2121151096 and 2121151105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121151121) 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 3 ways as a sum of consecutive naturals, for example, 3957104 + ... + 3957639.

It is an arithmetic number, because the mean of its divisors is an integer number (313951512).

Almost surely, 2^2121151124 is an apocalyptic number.

It is an amenable number.

2121151124 is a deficient number, since it is larger than the sum of its proper divisors (1646267020).

2121151124 is a wasteful number, since it uses less digits than its factorization.

2121151124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7914814 (or 7914812 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 2121151124 is about 46055.9564443080. The cubic root of 2121151124 is about 1284.8641267005.

Adding to 2121151124 its reverse (4211511212), we get a palindrome (6332662336).

The spelling of 2121151124 in words is "two billion, one hundred twenty-one million, one hundred fifty-one thousand, one hundred twenty-four".