20430340424212 has 24 divisors (see below), whose sum is σ = 38374797373416. Its totient is φ = 9482575408128.

The previous prime is 20430340424209. The next prime is 20430340424227. The reversal of 20430340424212 is 21242404303402.

It can be written as a sum of positive squares in 4 ways, for example, as 11092390114576 + 9337950309636 = 3330524^2 + 3055806^2 .

It is a super-3 number, since 3×20430340424212³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2057845603 + ... + 2057855530.

It is an arithmetic number, because the mean of its divisors is an integer number (1598949890559).

Almost surely, 2^{20430340424212} is an apocalyptic number.

It is an amenable number.

20430340424212 is a deficient number, since it is larger than the sum of its proper divisors (17944456949204).

20430340424212 is a wasteful number, since it uses less digits than its factorization.

20430340424212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115701227 (or 4115701225 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20430340424212 its reverse (21242404303402), we get a palindrome (41672744727614).

The spelling of 20430340424212 in words is "twenty trillion, four hundred thirty billion, three hundred forty million, four hundred twenty-four thousand, two hundred twelve".