30121120233 has 12 divisors (see below), whose sum is σ = 43785409668. Its totient is φ = 19952843040.

The previous prime is 30121120201. The next prime is 30121120291. The reversal of 30121120233 is 33202112103.

It can be written as a sum of positive squares in 2 ways, for example, as 9896867289 + 20224252944 = 99483^2 + 142212^2 .

It is not a de Polignac number, because 30121120233 - 2⁵ = 30121120201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30121124233) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10657158 + ... + 10659983.

It is an arithmetic number, because the mean of its divisors is an integer number (3648784139).

Almost surely, 2^30121120233 is an apocalyptic number.

It is an amenable number.

30121120233 is a deficient number, since it is larger than the sum of its proper divisors (13664289435).

30121120233 is a wasteful number, since it uses less digits than its factorization.

30121120233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21317304 (or 21317301 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30121120233 its reverse (33202112103), we get a palindrome (63323232336).

The spelling of 30121120233 in words is "thirty billion, one hundred twenty-one million, one hundred twenty thousand, two hundred thirty-three".