24045221421 has 12 divisors (see below), whose sum is σ = 37403677948. Its totient is φ = 14797059264.

The previous prime is 24045221381. The next prime is 24045221437. The reversal of 24045221421 is 12412254042.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15206589225 + 8838632196 = 123315^2 + 94014^2 .

It is not a de Polignac number, because 24045221421 - 2⁷ = 24045221293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24045221441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102757240 + ... + 102757473.

Almost surely, 2^24045221421 is an apocalyptic number.

It is an amenable number.

24045221421 is a deficient number, since it is larger than the sum of its proper divisors (13358456527).

24045221421 is a wasteful number, since it uses less digits than its factorization.

24045221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205514732 (or 205514729 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 24045221421 its reverse (12412254042), we get a palindrome (36457475463).

The spelling of 24045221421 in words is "twenty-four billion, forty-five million, two hundred twenty-one thousand, four hundred twenty-one".