30221321212 has 6 divisors (see below), whose sum is σ = 52887312128. Its totient is φ = 15110660604.

The previous prime is 30221321177. The next prime is 30221321233. The reversal of 30221321212 is 21212312203.

It is a super-2 number, since 2×30221321212² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30221321212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3777665148 + ... + 3777665155.

Almost surely, 2^30221321212 is an apocalyptic number.

It is an amenable number.

30221321212 is a deficient number, since it is larger than the sum of its proper divisors (22665990916).

30221321212 is a wasteful number, since it uses less digits than its factorization.

30221321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555330307 (or 7555330305 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30221321212 its reverse (21212312203), we get a palindrome (51433633415).

Subtracting from 30221321212 its reverse (21212312203), we obtain a palindrome (9009009009).

The spelling of 30221321212 in words is "thirty billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred twelve".