2121324013 has 8 divisors (see below), whose sum is σ = 2164095360. Its totient is φ = 2078910960.

The previous prime is 2121324001. The next prime is 2121324131. The reversal of 2121324013 is 3104231212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121324013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121324713) 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, 77598 + ... + 101311.

It is an arithmetic number, because the mean of its divisors is an integer number (270511920).

Almost surely, 2^2121324013 is an apocalyptic number.

It is an amenable number.

2121324013 is a deficient number, since it is larger than the sum of its proper divisors (42771347).

2121324013 is a wasteful number, since it uses less digits than its factorization.

2121324013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179147.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2121324013 is about 46057.8333511250. The cubic root of 2121324013 is about 1284.8990342933.

Adding to 2121324013 its reverse (3104231212), we get a palindrome (5225555225).

The spelling of 2121324013 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, thirteen".