21230126682 has 16 divisors (see below), whose sum is σ = 42466872672. Its totient is φ = 7075605680.

The previous prime is 21230126663. The next prime is 21230126683. The reversal of 21230126682 is 28662103212.

It is not an unprimeable number, because it can be changed into a prime (21230126683) 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, 233613 + ... + 311504.

It is an arithmetic number, because the mean of its divisors is an integer number (2654179542).

Almost surely, 2^21230126682 is an apocalyptic number.

21230126682 is an abundant number, since it is smaller than the sum of its proper divisors (21236745990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230126682 is a wasteful number, since it uses less digits than its factorization.

21230126682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551613.

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 21230126682 its reverse (28662103212), we get a palindrome (49892229894).

The spelling of 21230126682 in words is "twenty-one billion, two hundred thirty million, one hundred twenty-six thousand, six hundred eighty-two".