21000210130223 has 32 divisors (see below), whose sum is σ = 21879194836992. Its totient is φ = 20134614528000.

The previous prime is 21000210130217. The next prime is 21000210130271. The reversal of 21000210130223 is 32203101200012.

It is a cyclic number.

It is not a de Polignac number, because 21000210130223 - 2²⁰ = 21000209081647 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 (21000210136223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3077852390 + ... + 3077859212.

It is an arithmetic number, because the mean of its divisors is an integer number (683724838656).

Almost surely, 2^{21000210130223} is an apocalyptic number.

21000210130223 is a deficient number, since it is larger than the sum of its proper divisors (878984706769).

21000210130223 is a wasteful number, since it uses less digits than its factorization.

21000210130223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8655.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21000210130223 its reverse (32203101200012), we get a palindrome (53203311330235).

The spelling of 21000210130223 in words is "twenty-one trillion, two hundred ten million, one hundred thirty thousand, two hundred twenty-three".