21224510213363 has 8 divisors (see below), whose sum is σ = 21578000288640. Its totient is φ = 20871199082880.

The previous prime is 21224510213351. The next prime is 21224510213407. The reversal of 21224510213363 is 36331201542212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21224510213363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21224510213303) 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, 44496995 + ... + 44971452.

It is an arithmetic number, because the mean of its divisors is an integer number (2697250036080).

Almost surely, 2^{21224510213363} is an apocalyptic number.

21224510213363 is a deficient number, since it is larger than the sum of its proper divisors (353490075277).

21224510213363 is an equidigital number, since it uses as much as digits as its factorization.

21224510213363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89472397.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 21224510213363 its reverse (36331201542212), we get a palindrome (57555711755575).

The spelling of 21224510213363 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred ten million, two hundred thirteen thousand, three hundred sixty-three".