30003121212 has 48 divisors (see below), whose sum is σ = 71017357824. Its totient is φ = 9856840000.

The previous prime is 30003121201. The next prime is 30003121219. The reversal of 30003121212 is 21212130003.

It is a junction number, because it is equal to n+sod(n) for n = 30003121191 and 30003121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30003121219) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4555762 + ... + 4562342.

It is an arithmetic number, because the mean of its divisors is an integer number (1479528288).

Almost surely, 2^30003121212 is an apocalyptic number.

It is an amenable number.

30003121212 is an abundant number, since it is smaller than the sum of its proper divisors (41014236612).

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

30003121212 is a wasteful number, since it uses less digits than its factorization.

30003121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12010 (or 12008 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30003121212 its reverse (21212130003), we get a palindrome (51215251215).

The spelling of 30003121212 in words is "thirty billion, three million, one hundred twenty-one thousand, two hundred twelve".