21230053243254 has 12 divisors (see below), whose sum is σ = 45998448693756. Its totient is φ = 7076684414412.

The previous prime is 21230053243253. The next prime is 21230053243261. The reversal of 21230053243254 is 45234235003212.

21230053243254 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 0 + 0 + 5 + 324 + 325 + 4 = 666.

It is a super-2 number, since 2×21230053243254² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230053243253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589723701184 + ... + 589723701219.

It is an arithmetic number, because the mean of its divisors is an integer number (3833204057813).

Almost surely, 2^{21230053243254} is an apocalyptic number.

21230053243254 is an abundant number, since it is smaller than the sum of its proper divisors (24768395450502).

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

21230053243254 is a wasteful number, since it uses less digits than its factorization.

21230053243254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179447402411 (or 1179447402408 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 21230053243254 its reverse (45234235003212), we get a palindrome (66464288246466).

The spelling of 21230053243254 in words is "twenty-one trillion, two hundred thirty billion, fifty-three million, two hundred forty-three thousand, two hundred fifty-four".