20135324212 has 12 divisors (see below), whose sum is σ = 37309571460. Its totient is φ = 9475446656.

The previous prime is 20135324173. The next prime is 20135324213. The reversal of 20135324212 is 21242353102.

It can be written as a sum of positive squares in 2 ways, for example, as 10950785316 + 9184538896 = 104646^2 + 95836^2 .

It is a super-2 number, since 2×20135324212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135324213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148053787 + ... + 148053922.

It is an arithmetic number, because the mean of its divisors is an integer number (3109130955).

Almost surely, 2^20135324212 is an apocalyptic number.

It is an amenable number.

20135324212 is a deficient number, since it is larger than the sum of its proper divisors (17174247248).

20135324212 is a wasteful number, since it uses less digits than its factorization.

20135324212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296107730 (or 296107728 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20135324212 its reverse (21242353102), we get a palindrome (41377677314).

The spelling of 20135324212 in words is "twenty billion, one hundred thirty-five million, three hundred twenty-four thousand, two hundred twelve".