21221433333023 has 16 divisors (see below), whose sum is σ = 26458202361600. Its totient is φ = 16535987160000.

The previous prime is 21221433332999. The next prime is 21221433333029. The reversal of 21221433333023 is 32033333412212.

It is not a de Polignac number, because 21221433333023 - 2⁶ = 21221433332959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221433333029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5143523 + ... + 8300523.

It is an arithmetic number, because the mean of its divisors is an integer number (1653637647600).

Almost surely, 2^{21221433333023} is an apocalyptic number.

21221433333023 is a deficient number, since it is larger than the sum of its proper divisors (5236769028577).

21221433333023 is a wasteful number, since it uses less digits than its factorization.

21221433333023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244318.

The product of its (nonzero) digits is 46656, while the sum is 32.

Adding to 21221433333023 its reverse (32033333412212), we get a palindrome (53254766745235).

The spelling of 21221433333023 in words is "twenty-one trillion, two hundred twenty-one billion, four hundred thirty-three million, three hundred thirty-three thousand, twenty-three".