30121223113 has 2 divisors, whose sum is σ = 30121223114. Its totient is φ = 30121223112.

The previous prime is 30121223021. The next prime is 30121223117. The reversal of 30121223113 is 31132212103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28300323529 + 1820899584 = 168227^2 + 42672^2 .

It is a cyclic number.

It is not a de Polignac number, because 30121223113 - 2³³ = 21531288521 is a prime.

It is not a weakly prime, because it can be changed into another prime (30121223117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060611556 + 15060611557.

It is an arithmetic number, because the mean of its divisors is an integer number (15060611557).

Almost surely, 2^30121223113 is an apocalyptic number.

It is an amenable number.

30121223113 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121223113 is an equidigital number, since it uses as much as digits as its factorization.

30121223113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30121223113 its reverse (31132212103), we get a palindrome (61253435216).

The spelling of 30121223113 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred thirteen".