21230003112021 has 24 divisors (see below), whose sum is σ = 33457032479520. Its totient is φ = 12865247690400.

The previous prime is 21230003112011. The next prime is 21230003112029. The reversal of 21230003112021 is 12021130003212.

21230003112021 is a `hidden beast` number, since 2 + 12 + 300 + 0 + 311 + 20 + 21 = 666.

It is not a de Polignac number, because 21230003112021 - 2¹⁵ = 21230003079253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21230003111985 and 21230003112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230003112029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10939150 + ... + 12732831.

It is an arithmetic number, because the mean of its divisors is an integer number (1394043019980).

Almost surely, 2^{21230003112021} is an apocalyptic number.

It is an amenable number.

21230003112021 is a deficient number, since it is larger than the sum of its proper divisors (12227029367499).

21230003112021 is a wasteful number, since it uses less digits than its factorization.

21230003112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23681057 (or 23681054 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21230003112021 its reverse (12021130003212), we get a palindrome (33251133115233).

The spelling of 21230003112021 in words is "twenty-one trillion, two hundred thirty billion, three million, one hundred twelve thousand, twenty-one".