21226603223 has 32 divisors (see below), whose sum is σ = 26420194944. Its totient is φ = 16635912192.

The previous prime is 21226603219. The next prime is 21226603241. The reversal of 21226603223 is 32230662212.

It is a cyclic number.

It is not a de Polignac number, because 21226603223 - 2² = 21226603219 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 (21226603213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3224111 + ... + 3230687.

It is an arithmetic number, because the mean of its divisors is an integer number (825631092).

Almost surely, 2^21226603223 is an apocalyptic number.

21226603223 is a deficient number, since it is larger than the sum of its proper divisors (5193591721).

21226603223 is a wasteful number, since it uses less digits than its factorization.

21226603223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7371.

The product of its (nonzero) digits is 10368, while the sum is 29.

The spelling of 21226603223 in words is "twenty-one billion, two hundred twenty-six million, six hundred three thousand, two hundred twenty-three".