30512012212 has 48 divisors (see below), whose sum is σ = 58578549120. Its totient is φ = 13791081600.

The previous prime is 30512012207. The next prime is 30512012213. The reversal of 30512012212 is 21221021503.

It is a self number, because there is not a number n which added to its sum of digits gives 30512012212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30512012213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11253537 + ... + 11256247.

It is an arithmetic number, because the mean of its divisors is an integer number (1220386440).

Almost surely, 2^30512012212 is an apocalyptic number.

It is an amenable number.

30512012212 is a deficient number, since it is larger than the sum of its proper divisors (28066536908).

30512012212 is a wasteful number, since it uses less digits than its factorization.

30512012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072 (or 4070 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 30512012212 its reverse (21221021503), we get a palindrome (51733033715).

The spelling of 30512012212 in words is "thirty billion, five hundred twelve million, twelve thousand, two hundred twelve".