21153045223 has 8 divisors (see below), whose sum is σ = 21321820080. Its totient is φ = 20984832960.

The previous prime is 21153045217. The next prime is 21153045257. The reversal of 21153045223 is 32254035112.

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 21153045223 - 2¹⁷ = 21152914151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21153045191 and 21153045200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21153045203) 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, 64990 + ... + 215707.

It is an arithmetic number, because the mean of its divisors is an integer number (2665227510).

Almost surely, 2^21153045223 is an apocalyptic number.

21153045223 is a deficient number, since it is larger than the sum of its proper divisors (168774857).

21153045223 is a wasteful number, since it uses less digits than its factorization.

21153045223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281297.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 21153045223 in words is "twenty-one billion, one hundred fifty-three million, forty-five thousand, two hundred twenty-three".