21282575229 has 8 divisors (see below), whose sum is σ = 31529741120. Its totient is φ = 14188383468.

The previous prime is 21282575201. The next prime is 21282575239. The reversal of 21282575229 is 92257528212.

It is not a de Polignac number, because 21282575229 - 2¹⁵ = 21282542461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21282575239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 394121737 + ... + 394121790.

It is an arithmetic number, because the mean of its divisors is an integer number (3941217640).

Almost surely, 2^21282575229 is an apocalyptic number.

It is an amenable number.

21282575229 is a deficient number, since it is larger than the sum of its proper divisors (10247165891).

21282575229 is an equidigital number, since it uses as much as digits as its factorization.

21282575229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788243536 (or 788243530 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 21282575229 in words is "twenty-one billion, two hundred eighty-two million, five hundred seventy-five thousand, two hundred twenty-nine".