21213063033044 has 6 divisors (see below), whose sum is σ = 37122860307834. Its totient is φ = 10606531516520.

The previous prime is 21213063033007. The next prime is 21213063033047. The reversal of 21213063033044 is 44033036031212.

21213063033044 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15312351610000 + 5900711423044 = 3913100^2 + 2429138^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21213063033044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213063033047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2651632879127 + ... + 2651632879134.

It is an arithmetic number, because the mean of its divisors is an integer number (6187143384639).

Almost surely, 2^{21213063033044} is an apocalyptic number.

It is an amenable number.

21213063033044 is a deficient number, since it is larger than the sum of its proper divisors (15909797274790).

21213063033044 is a wasteful number, since it uses less digits than its factorization.

21213063033044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303265758265 (or 5303265758263 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 21213063033044 its reverse (44033036031212), we get a palindrome (65246099064256).

The spelling of 21213063033044 in words is "twenty-one trillion, two hundred thirteen billion, sixty-three million, thirty-three thousand, forty-four".