30121120220 has 24 divisors (see below), whose sum is σ = 63261560544. Its totient is φ = 12047075136.

The previous prime is 30121120201. The next prime is 30121120291. The reversal of 30121120220 is 2202112103.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30121120195 and 30121120204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104369 + ... + 266711.

It is an arithmetic number, because the mean of its divisors is an integer number (2635898356).

Almost surely, 2^30121120220 is an apocalyptic number.

It is an amenable number.

30121120220 is an abundant number, since it is smaller than the sum of its proper divisors (33140440324).

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

30121120220 is a wasteful number, since it uses less digits than its factorization.

30121120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171629 (or 171627 counting only the distinct ones).

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

Adding to 30121120220 its reverse (2202112103), we get a palindrome (32323232323).

The spelling of 30121120220 in words is "thirty billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twenty".