21023023221223 has 8 divisors (see below), whose sum is σ = 21472665693120. Its totient is φ = 20573478420480.

The previous prime is 21023023221133. The next prime is 21023023221227. The reversal of 21023023221223 is 32212232032012.

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

It is a cyclic number.

It is not a de Polignac number, because 21023023221223 - 2³³ = 21014433286631 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 (21023023221227) 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, 23982618 + ... + 24843751.

It is an arithmetic number, because the mean of its divisors is an integer number (2684083211640).

Almost surely, 2^{21023023221223} is an apocalyptic number.

21023023221223 is a deficient number, since it is larger than the sum of its proper divisors (449642471897).

21023023221223 is an equidigital number, since it uses as much as digits as its factorization.

21023023221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48835577.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21023023221223 its reverse (32212232032012), we get a palindrome (53235255253235).

The spelling of 21023023221223 in words is "twenty-one trillion, twenty-three billion, twenty-three million, two hundred twenty-one thousand, two hundred twenty-three".