30120231121 has 2 divisors, whose sum is σ = 30120231122. Its totient is φ = 30120231120.

The previous prime is 30120231041. The next prime is 30120231139. The reversal of 30120231121 is 12113202103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26678648896 + 3441582225 = 163336^2 + 58665^2 .

It is a cyclic number.

It is not a de Polignac number, because 30120231121 - 2⁷ = 30120230993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30120231095 and 30120231104.

It is not a weakly prime, because it can be changed into another prime (30120231521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060115560 + 15060115561.

It is an arithmetic number, because the mean of its divisors is an integer number (15060115561).

Almost surely, 2^30120231121 is an apocalyptic number.

It is an amenable number.

30120231121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120231121 is an equidigital number, since it uses as much as digits as its factorization.

30120231121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30120231121 its reverse (12113202103), we get a palindrome (42233433224).

The spelling of 30120231121 in words is "thirty billion, one hundred twenty million, two hundred thirty-one thousand, one hundred twenty-one".