21302110132123 has 8 divisors (see below), whose sum is σ = 21654458717760. Its totient is φ = 20952614571840.

The previous prime is 21302110132117. The next prime is 21302110132133. The reversal of 21302110132123 is 32123101120312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21302110132123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302110132094 and 21302110132103.

It is not an unprimeable number, because it can be changed into a prime (21302110132133) 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, 713241283 + ... + 713271148.

It is an arithmetic number, because the mean of its divisors is an integer number (2706807339720).

Almost surely, 2^{21302110132123} is an apocalyptic number.

21302110132123 is a deficient number, since it is larger than the sum of its proper divisors (352348585637).

21302110132123 is a wasteful number, since it uses less digits than its factorization.

21302110132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426512677.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21302110132123 its reverse (32123101120312), we get a palindrome (53425211252435).

The spelling of 21302110132123 in words is "twenty-one trillion, three hundred two billion, one hundred ten million, one hundred thirty-two thousand, one hundred twenty-three".