2421055221 has 32 divisors (see below), whose sum is σ = 3874631040. Its totient is φ = 1328431104.

The previous prime is 2421055213. The next prime is 2421055249. The reversal of 2421055221 is 1225501242.

It is not a de Polignac number, because 2421055221 - 2³ = 2421055213 is a prime.

It is a super-3 number, since 3×2421055221³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2421055191 and 2421055200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421055201) 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 31 ways as a sum of consecutive naturals, for example, 83500 + ... + 108693.

It is an arithmetic number, because the mean of its divisors is an integer number (121082220).

Almost surely, 2^2421055221 is an apocalyptic number.

It is an amenable number.

2421055221 is a deficient number, since it is larger than the sum of its proper divisors (1453575819).

2421055221 is a wasteful number, since it uses less digits than its factorization.

2421055221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192245.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2421055221 is about 49204.2195446691. The cubic root of 2421055221 is about 1342.7698000937.

Adding to 2421055221 its reverse (1225501242), we get a palindrome (3646556463).

The spelling of 2421055221 in words is "two billion, four hundred twenty-one million, fifty-five thousand, two hundred twenty-one".