2121324534 has 48 divisors (see below), whose sum is σ = 5276014848. Its totient is φ = 603414576.

The previous prime is 2121324533. The next prime is 2121324641. The reversal of 2121324534 is 4354231212.

2121324534 is a `hidden beast` number, since 2 + 121 + 3 + 2 + 4 + 534 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2121324498 and 2121324507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121324533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8482 + ... + 65685.

It is an arithmetic number, because the mean of its divisors is an integer number (109916976).

Almost surely, 2^2121324534 is an apocalyptic number.

2121324534 is an abundant number, since it is smaller than the sum of its proper divisors (3154690314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121324534 is a wasteful number, since it uses less digits than its factorization.

2121324534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74409 (or 74406 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2121324534 is about 46057.8390070572. The cubic root of 2121324534 is about 1284.8991394843.

Adding to 2121324534 its reverse (4354231212), we get a palindrome (6475555746).

The spelling of 2121324534 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, five hundred thirty-four".