21224033343336 has 64 divisors (see below), whose sum is σ = 56207556823680. Its totient is φ = 6655404165120.

The previous prime is 21224033343281. The next prime is 21224033343379. The reversal of 21224033343336 is 63334333042212.

It is a junction number, because it is equal to n+sod(n) for n = 21224033343294 and 21224033343303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11299300 + ... + 13043091.

It is an arithmetic number, because the mean of its divisors is an integer number (878243075370).

Almost surely, 2^{21224033343336} is an apocalyptic number.

It is an amenable number.

21224033343336 is an abundant number, since it is smaller than the sum of its proper divisors (34983523480344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21224033343336 is a wasteful number, since it uses less digits than its factorization.

21224033343336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24344554 (or 24344550 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 39.

Adding to 21224033343336 its reverse (63334333042212), we get a palindrome (84558366385548).

The spelling of 21224033343336 in words is "twenty-one trillion, two hundred twenty-four billion, thirty-three million, three hundred forty-three thousand, three hundred thirty-six".