21214036503460 has 24 divisors (see below), whose sum is σ = 44549582890176. Its totient is φ = 8485594366560.

The previous prime is 21214036503427. The next prime is 21214036503467. The reversal of 21214036503460 is 6430563041212.

It is not an unprimeable number, because it can be changed into a prime (21214036503467) 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, 9614899 + ... + 11613541.

It is an arithmetic number, because the mean of its divisors is an integer number (1856232620424).

Almost surely, 2^{21214036503460} is an apocalyptic number.

21214036503460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21214036503460 is an abundant number, since it is smaller than the sum of its proper divisors (23335546386716).

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

21214036503460 is a wasteful number, since it uses less digits than its factorization.

21214036503460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529363 (or 2529361 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 21214036503460 its reverse (6430563041212), we get a palindrome (27644599544672).

The spelling of 21214036503460 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred three thousand, four hundred sixty".