30221213312 has 32 divisors (see below), whose sum is σ = 60220130880. Its totient is φ = 15107141376.

The previous prime is 30221213299. The next prime is 30221213317. The reversal of 30221213312 is 21331212203.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (30221213317) 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, 587543 + ... + 636905.

It is an arithmetic number, because the mean of its divisors is an integer number (1881879090).

Almost surely, 2^30221213312 is an apocalyptic number.

30221213312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30221213312 is a deficient number, since it is larger than the sum of its proper divisors (29998917568).

30221213312 is an equidigital number, since it uses as much as digits as its factorization.

30221213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54160 (or 54148 counting only the distinct ones).

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

Adding to 30221213312 its reverse (21331212203), we get a palindrome (51552425515).

The spelling of 30221213312 in words is "thirty billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred twelve".