30120213031212 has 12 divisors (see below), whose sum is σ = 70280497072856. Its totient is φ = 10040071010400.

The previous prime is 30120213031177. The next prime is 30120213031213. The reversal of 30120213031212 is 21213031202103.

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 (30120213031213) 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, 1255008876289 + ... + 1255008876312.

Almost surely, 2^{30120213031212} is an apocalyptic number.

It is an amenable number.

30120213031212 is an abundant number, since it is smaller than the sum of its proper divisors (40160284041644).

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

30120213031212 is a wasteful number, since it uses less digits than its factorization.

30120213031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510017752608 (or 2510017752606 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30120213031212 its reverse (21213031202103), we get a palindrome (51333244233315).

The spelling of 30120213031212 in words is "thirty trillion, one hundred twenty billion, two hundred thirteen million, thirty-one thousand, two hundred twelve".