30120121117 has 2 divisors, whose sum is σ = 30120121118. Its totient is φ = 30120121116.

The previous prime is 30120121067. The next prime is 30120121133. The reversal of 30120121117 is 71112102103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27745898041 + 2374223076 = 166571^2 + 48726^2 .

It is a cyclic number.

It is not a de Polignac number, because 30120121117 - 2¹¹ = 30120119069 is a prime.

It is a super-2 number, since 2×30120121117² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30120121094 and 30120121103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30120122117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060060558 + 15060060559.

It is an arithmetic number, because the mean of its divisors is an integer number (15060060559).

Almost surely, 2^30120121117 is an apocalyptic number.

It is an amenable number.

30120121117 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120121117 is an equidigital number, since it uses as much as digits as its factorization.

30120121117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

The spelling of 30120121117 in words is "thirty billion, one hundred twenty million, one hundred twenty-one thousand, one hundred seventeen".