21224452107 has 8 divisors (see below), whose sum is σ = 28315835280. Its totient is φ = 14141351840.

The previous prime is 21224452099. The next prime is 21224452163. The reversal of 21224452107 is 70125442212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21224452107 - 2³ = 21224452099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21224452177) 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, 2064744 + ... + 2074997.

It is an arithmetic number, because the mean of its divisors is an integer number (3539479410).

Almost surely, 2^21224452107 is an apocalyptic number.

21224452107 is a deficient number, since it is larger than the sum of its proper divisors (7091383173).

21224452107 is a wasteful number, since it uses less digits than its factorization.

21224452107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141453.

The product of its (nonzero) digits is 8960, while the sum is 30.

Adding to 21224452107 its reverse (70125442212), we get a palindrome (91349894319).

The spelling of 21224452107 in words is "twenty-one billion, two hundred twenty-four million, four hundred fifty-two thousand, one hundred seven".