21260453223 has 8 divisors (see below), whose sum is σ = 28379450736. Its totient is φ = 14157545600.

The previous prime is 21260453197. The next prime is 21260453257. The reversal of 21260453223 is 32235406212.

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 21260453223 - 2¹⁴ = 21260436839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21260453273) 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 in 7 ways as a sum of consecutive naturals, for example, 4019388 + ... + 4024673.

It is an arithmetic number, because the mean of its divisors is an integer number (3547431342).

Almost surely, 2^21260453223 is an apocalyptic number.

21260453223 is a deficient number, since it is larger than the sum of its proper divisors (7118997513).

21260453223 is an equidigital number, since it uses as much as digits as its factorization.

21260453223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044945.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21260453223 its reverse (32235406212), we get a palindrome (53495859435).

The spelling of 21260453223 in words is "twenty-one billion, two hundred sixty million, four hundred fifty-three thousand, two hundred twenty-three".