21130003223 has 8 divisors (see below), whose sum is σ = 24165229440. Its totient is φ = 18098940600.

The previous prime is 21130003201. The next prime is 21130003277. The reversal of 21130003223 is 32230003112.

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 21130003223 - 2¹⁰ = 21130002199 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 (21130003523) 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, 1030013 + ... + 1050326.

It is an arithmetic number, because the mean of its divisors is an integer number (3020653680).

Almost surely, 2^21130003223 is an apocalyptic number.

21130003223 is a deficient number, since it is larger than the sum of its proper divisors (3035226217).

21130003223 is a wasteful number, since it uses less digits than its factorization.

21130003223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081797.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21130003223 its reverse (32230003112), we get a palindrome (53360006335).

The spelling of 21130003223 in words is "twenty-one billion, one hundred thirty million, three thousand, two hundred twenty-three".