21130223323001 has 24 divisors (see below), whose sum is σ = 23480719042200. Its totient is φ = 18901379220480.

The previous prime is 21130223322997. The next prime is 21130223323009. The reversal of 21130223323001 is 10032332203112.

It can be written as a sum of positive squares in 12 ways, for example, as 17053397939776 + 4076825383225 = 4129576^2 + 2019115^2 .

It is not a de Polignac number, because 21130223323001 - 2² = 21130223322997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21130223323009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11381 + ... + 6500813.

It is an arithmetic number, because the mean of its divisors is an integer number (978363293425).

Almost surely, 2^{21130223323001} is an apocalyptic number.

It is an amenable number.

21130223323001 is a deficient number, since it is larger than the sum of its proper divisors (2350495719199).

21130223323001 is a wasteful number, since it uses less digits than its factorization.

21130223323001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489677 (or 6489636 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21130223323001 its reverse (10032332203112), we get a palindrome (31162555526113).

The spelling of 21130223323001 in words is "twenty-one trillion, one hundred thirty billion, two hundred twenty-three million, three hundred twenty-three thousand, one".