20003212212 has 12 divisors (see below), whose sum is σ = 46674161856. Its totient is φ = 6667737400.

The previous prime is 20003212211. The next prime is 20003212219. The reversal of 20003212212 is 21221230002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20003212191 and 20003212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003212211) 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, 833467164 + ... + 833467187.

It is an arithmetic number, because the mean of its divisors is an integer number (3889513488).

Almost surely, 2^20003212212 is an apocalyptic number.

It is an amenable number.

20003212212 is an abundant number, since it is smaller than the sum of its proper divisors (26670949644).

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

20003212212 is a wasteful number, since it uses less digits than its factorization.

20003212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666934358 (or 1666934356 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20003212212 its reverse (21221230002), we get a palindrome (41224442214).

The spelling of 20003212212 in words is "twenty billion, three million, two hundred twelve thousand, two hundred twelve".