24215530221 has 24 divisors (see below), whose sum is σ = 35558839680. Its totient is φ = 15877195776.

The previous prime is 24215530219. The next prime is 24215530277. The reversal of 24215530221 is 12203551242.

It is not a de Polignac number, because 24215530221 - 2¹ = 24215530219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24215530321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116466 + ... + 248988.

It is an arithmetic number, because the mean of its divisors is an integer number (1481618320).

Almost surely, 2^24215530221 is an apocalyptic number.

It is an amenable number.

24215530221 is a deficient number, since it is larger than the sum of its proper divisors (11343309459).

24215530221 is a wasteful number, since it uses less digits than its factorization.

24215530221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132865 (or 132862 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 24215530221 in words is "twenty-four billion, two hundred fifteen million, five hundred thirty thousand, two hundred twenty-one".