20403334212 has 12 divisors (see below), whose sum is σ = 47607779856. Its totient is φ = 6801111400.

The previous prime is 20403334207. The next prime is 20403334219. The reversal of 20403334212 is 21243330402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20403334219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850138914 + ... + 850138937.

It is an arithmetic number, because the mean of its divisors is an integer number (3967314988).

Almost surely, 2^20403334212 is an apocalyptic number.

It is an amenable number.

20403334212 is an abundant number, since it is smaller than the sum of its proper divisors (27204445644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20403334212 is a wasteful number, since it uses less digits than its factorization.

20403334212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700277858 (or 1700277856 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20403334212 its reverse (21243330402), we get a palindrome (41646664614).

The spelling of 20403334212 in words is "twenty billion, four hundred three million, three hundred thirty-four thousand, two hundred twelve".