21236072035075 has 12 divisors (see below), whose sum is σ = 26466398006400. Its totient is φ = 16902619768160.

The previous prime is 21236072035063. The next prime is 21236072035097. The reversal of 21236072035075 is 57053027063212.

It is not a de Polignac number, because 21236072035075 - 2¹⁵ = 21236072002307 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2155941475 + ... + 2155951324.

It is an arithmetic number, because the mean of its divisors is an integer number (2205533167200).

Almost surely, 2^{21236072035075} is an apocalyptic number.

21236072035075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21236072035075 is a deficient number, since it is larger than the sum of its proper divisors (5230325971325).

21236072035075 is a wasteful number, since it uses less digits than its factorization.

21236072035075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311893006 (or 4311893001 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 43.

Adding to 21236072035075 its reverse (57053027063212), we get a palindrome (78289099098287).

The spelling of 21236072035075 in words is "twenty-one trillion, two hundred thirty-six billion, seventy-two million, thirty-five thousand, seventy-five".