30331223320212 has 144 divisors (see below), whose sum is σ = 81305351487360. Its totient is φ = 9507398955264.

The previous prime is 30331223320147. The next prime is 30331223320247. The reversal of 30331223320212 is 21202332213303.

30331223320212 is a `hidden beast` number, since 3 + 0 + 3 + 3 + 122 + 3 + 320 + 212 = 666.

It is a super-2 number, since 2×30331223320212² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49525738 + ... + 50134430.

It is an arithmetic number, because the mean of its divisors is an integer number (564620496440).

Almost surely, 2^{30331223320212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30331223320212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40652675743680).

30331223320212 is an abundant number, since it is smaller than the sum of its proper divisors (50974128167148).

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

30331223320212 is a wasteful number, since it uses less digits than its factorization.

30331223320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609262 (or 609257 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 30331223320212 its reverse (21202332213303), we get a palindrome (51533555533515).

The spelling of 30331223320212 in words is "thirty trillion, three hundred thirty-one billion, two hundred twenty-three million, three hundred twenty thousand, two hundred twelve".