21100132231230 has 32 divisors (see below), whose sum is σ = 54535726383264. Its totient is φ = 5193878702976.

The previous prime is 21100132231229. The next prime is 21100132231253. The reversal of 21100132231230 is 3213223100112.

It is a junction number, because it is equal to n+sod(n) for n = 21100132231197 and 21100132231206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27051451189 + ... + 27051451968.

It is an arithmetic number, because the mean of its divisors is an integer number (1704241449477).

Almost surely, 2^{21100132231230} is an apocalyptic number.

21100132231230 is an abundant number, since it is smaller than the sum of its proper divisors (33435594152034).

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

21100132231230 is a wasteful number, since it uses less digits than its factorization.

21100132231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54102903180.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21100132231230 its reverse (3213223100112), we get a palindrome (24313355331342).

The spelling of 21100132231230 in words is "twenty-one trillion, one hundred billion, one hundred thirty-two million, two hundred thirty-one thousand, two hundred thirty".