2421116021 has 8 divisors (see below), whose sum is σ = 2552686080. Its totient is φ = 2289960288.

The previous prime is 2421115987. The next prime is 2421116041. The reversal of 2421116021 is 1206111242.

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-2421116021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2421115984 and 2421116002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421116041) 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, 91541 + ... + 114986.

It is an arithmetic number, because the mean of its divisors is an integer number (319085760).

Almost surely, 2^2421116021 is an apocalyptic number.

It is an amenable number.

2421116021 is a deficient number, since it is larger than the sum of its proper divisors (131570059).

2421116021 is a wasteful number, since it uses less digits than its factorization.

2421116021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207163.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2421116021 is about 49204.8373739818. The cubic root of 2421116021 is about 1342.7810403330.

Adding to 2421116021 its reverse (1206111242), we get a palindrome (3627227263).

The spelling of 2421116021 in words is "two billion, four hundred twenty-one million, one hundred sixteen thousand, twenty-one".