10003121212 has 24 divisors (see below), whose sum is σ = 20028847104. Its totient is φ = 4282208112.

The previous prime is 10003121189. The next prime is 10003121213. The reversal of 10003121212 is 21212130001.

It is a junction number, because it is equal to n+sod(n) for n = 10003121192 and 10003121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10003121213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176548 + ... + 226219.

It is an arithmetic number, because the mean of its divisors is an integer number (834535296).

Almost surely, 2^10003121212 is an apocalyptic number.

It is an amenable number.

10003121212 is an abundant number, since it is smaller than the sum of its proper divisors (10025725892).

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

10003121212 is a wasteful number, since it uses less digits than its factorization.

10003121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403665 (or 403663 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10003121212 its reverse (21212130001), we get a palindrome (31215251213).

The spelling of 10003121212 in words is "ten billion, three million, one hundred twenty-one thousand, two hundred twelve".