21001031113230 has 96 divisors (see below), whose sum is σ = 62441898914304. Its totient is φ = 4797248372928.

The previous prime is 21001031113229. The next prime is 21001031113313. The reversal of 21001031113230 is 3231113010012.

21001031113230 is a `hidden beast` number, since 2 + 100 + 10 + 311 + 13 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9359392 + ... + 11384211.

It is an arithmetic number, because the mean of its divisors is an integer number (650436447024).

Almost surely, 2^{21001031113230} is an apocalyptic number.

21001031113230 is an abundant number, since it is smaller than the sum of its proper divisors (41440867801074).

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

21001031113230 is a wasteful number, since it uses less digits than its factorization.

21001031113230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20745230 (or 20745227 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21001031113230 its reverse (3231113010012), we get a palindrome (24232144123242).

The spelling of 21001031113230 in words is "twenty-one trillion, one billion, thirty-one million, one hundred thirteen thousand, two hundred thirty".