2421621219 has 16 divisors (see below), whose sum is σ = 3429917568. Its totient is φ = 1514489472.

The previous prime is 2421621173. The next prime is 2421621221. The reversal of 2421621219 is 9121261242.

It is not a de Polignac number, because 2421621219 - 2⁸ = 2421620963 is a prime.

It is a super-2 number, since 2×2421621219² = 11728498656622091922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2421621259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61677 + ... + 92990.

It is an arithmetic number, because the mean of its divisors is an integer number (214369848).

Almost surely, 2^2421621219 is an apocalyptic number.

2421621219 is a deficient number, since it is larger than the sum of its proper divisors (1008296349).

2421621219 is a wasteful number, since it uses less digits than its factorization.

2421621219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154994.

The product of its digits is 3456, while the sum is 30.

The square root of 2421621219 is about 49209.9707274857. The cubic root of 2421621219 is about 1342.8744302011.

The spelling of 2421621219 in words is "two billion, four hundred twenty-one million, six hundred twenty-one thousand, two hundred nineteen".