30220222212 has 36 divisors (see below), whose sum is σ = 79024147020. Its totient is φ = 9726048192.

The previous prime is 30220222211. The next prime is 30220222237. The reversal of 30220222212 is 21222202203.

It can be written as a sum of positive squares in 2 ways, for example, as 5396959296 + 24823262916 = 73464^2 + 157554^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30220222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14472243 + ... + 14474330.

It is an arithmetic number, because the mean of its divisors is an integer number (2195115195).

Almost surely, 2^30220222212 is an apocalyptic number.

It is an amenable number.

30220222212 is an abundant number, since it is smaller than the sum of its proper divisors (48803924808).

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

30220222212 is a wasteful number, since it uses less digits than its factorization.

30220222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28946612 (or 28946607 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 30220222212 its reverse (21222202203), we get a palindrome (51442424415).

The spelling of 30220222212 in words is "thirty billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twelve".