21302123131130 has 16 divisors (see below), whose sum is σ = 38343875692320. Its totient is φ = 8520837239952.

The previous prime is 21302123131123. The next prime is 21302123131139. The reversal of 21302123131130 is 3113132120312.

It is a junction number, because it is equal to n+sod(n) for n = 21302123131096 and 21302123131105.

It is not an unprimeable number, because it can be changed into a prime (21302123131139) 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, 10560281 + ... + 12414659.

It is an arithmetic number, because the mean of its divisors is an integer number (2396492230770).

Almost surely, 2^{21302123131130} is an apocalyptic number.

21302123131130 is a deficient number, since it is larger than the sum of its proper divisors (17041752561190).

21302123131130 is a wasteful number, since it uses less digits than its factorization.

21302123131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003133.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21302123131130 its reverse (3113132120312), we get a palindrome (24415255251442).

The spelling of 21302123131130 in words is "twenty-one trillion, three hundred two billion, one hundred twenty-three million, one hundred thirty-one thousand, one hundred thirty".