30313221212 has 12 divisors (see below), whose sum is σ = 53054300376. Its totient is φ = 15154849680.

The previous prime is 30313221209. The next prime is 30313221217. The reversal of 30313221212 is 21212231303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30313221217) 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, 401114 + ... + 470657.

It is an arithmetic number, because the mean of its divisors is an integer number (4421191698).

Almost surely, 2^30313221212 is an apocalyptic number.

It is an amenable number.

30313221212 is a deficient number, since it is larger than the sum of its proper divisors (22741079164).

30313221212 is a wasteful number, since it uses less digits than its factorization.

30313221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880468 (or 880466 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30313221212 its reverse (21212231303), we get a palindrome (51525452515).

The spelling of 30313221212 in words is "thirty billion, three hundred thirteen million, two hundred twenty-one thousand, two hundred twelve".