21214036501305 has 32 divisors (see below), whose sum is σ = 35124451891200. Its totient is φ = 10920411946752.

The previous prime is 21214036501283. The next prime is 21214036501349. The reversal of 21214036501305 is 50310563041212.

It is not a de Polignac number, because 21214036501305 - 2¹⁰ = 21214036500281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6707865 + ... + 9350054.

It is an arithmetic number, because the mean of its divisors is an integer number (1097639121600).

Almost surely, 2^{21214036501305} is an apocalyptic number.

It is an amenable number.

21214036501305 is a deficient number, since it is larger than the sum of its proper divisors (13910415389895).

21214036501305 is a wasteful number, since it uses less digits than its factorization.

21214036501305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16060993.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 21214036501305 its reverse (50310563041212), we get a palindrome (71524599542517).

The spelling of 21214036501305 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred one thousand, three hundred five".