21220133033044 has 48 divisors (see below), whose sum is σ = 41350985113536. Its totient is φ = 9446222822400.

The previous prime is 21220133033009. The next prime is 21220133033053. The reversal of 21220133033044 is 44033033102212.

It is a happy number.

21220133033044 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7042077 + ... + 9593284.

It is an arithmetic number, because the mean of its divisors is an integer number (861478856532).

Almost surely, 2^{21220133033044} is an apocalyptic number.

It is an amenable number.

21220133033044 is a deficient number, since it is larger than the sum of its proper divisors (20130852080492).

21220133033044 is a wasteful number, since it uses less digits than its factorization.

21220133033044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16635976 (or 16635974 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21220133033044 its reverse (44033033102212), we get a palindrome (65253166135256).

The spelling of 21220133033044 in words is "twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, thirty-three thousand, forty-four".