21033223123223 has 8 divisors (see below), whose sum is σ = 21046226836800. Its totient is φ = 21020219893728.

The previous prime is 21033223123219. The next prime is 21033223123261. The reversal of 21033223123223 is 32232132233012.

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 21033223123223 - 2² = 21033223123219 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 (21033223123123) 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, 128870393 + ... + 129033501.

It is an arithmetic number, because the mean of its divisors is an integer number (2630778354600).

Almost surely, 2^{21033223123223} is an apocalyptic number.

21033223123223 is a deficient number, since it is larger than the sum of its proper divisors (13003713577).

21033223123223 is a wasteful number, since it uses less digits than its factorization.

21033223123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242041.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21033223123223 its reverse (32232132233012), we get a palindrome (53265355356235).

The spelling of 21033223123223 in words is "twenty-one trillion, thirty-three billion, two hundred twenty-three million, one hundred twenty-three thousand, two hundred twenty-three".