30222120212 has 6 divisors (see below), whose sum is σ = 52888710378. Its totient is φ = 15111060104.

The previous prime is 30222120211. The next prime is 30222120239. The reversal of 30222120212 is 21202122203.

It can be written as a sum of positive squares in only one way, i.e., 28928567056 + 1293553156 = 170084^2 + 35966^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30222120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3777765023 + ... + 3777765030.

It is an arithmetic number, because the mean of its divisors is an integer number (8814785063).

Almost surely, 2^30222120212 is an apocalyptic number.

It is an amenable number.

30222120212 is a deficient number, since it is larger than the sum of its proper divisors (22666590166).

30222120212 is a wasteful number, since it uses less digits than its factorization.

30222120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555530057 (or 7555530055 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 30222120212 its reverse (21202122203), we get a palindrome (51424242415).

The spelling of 30222120212 in words is "thirty billion, two hundred twenty-two million, one hundred twenty thousand, two hundred twelve".