30021120212 has 6 divisors (see below), whose sum is σ = 52536960378. Its totient is φ = 15010560104.

The previous prime is 30021120203. The next prime is 30021120253. The reversal of 30021120212 is 21202112003.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 30021106756 + 13456 = 173266^2 + 116^2 .

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, 3752640023 + ... + 3752640030.

It is an arithmetic number, because the mean of its divisors is an integer number (8756160063).

Almost surely, 2^30021120212 is an apocalyptic number.

It is an amenable number.

30021120212 is a deficient number, since it is larger than the sum of its proper divisors (22515840166).

30021120212 is a wasteful number, since it uses less digits than its factorization.

30021120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7505280057 (or 7505280055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 30021120212 its reverse (21202112003), we get a palindrome (51223232215).

The spelling of 30021120212 in words is "thirty billion, twenty-one million, one hundred twenty thousand, two hundred twelve".