30771000121 has 2 divisors, whose sum is σ = 30771000122. Its totient is φ = 30771000120.

The previous prime is 30771000109. The next prime is 30771000131. The reversal of 30771000121 is 12100017703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29537234496 + 1233765625 = 171864^2 + 35125^2 .

It is a cyclic number.

It is not a de Polignac number, because 30771000121 - 2⁵ = 30771000089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30771000092 and 30771000101.

It is not a weakly prime, because it can be changed into another prime (30771000131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15385500060 + 15385500061.

It is an arithmetic number, because the mean of its divisors is an integer number (15385500061).

Almost surely, 2^30771000121 is an apocalyptic number.

It is an amenable number.

30771000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30771000121 is an equidigital number, since it uses as much as digits as its factorization.

30771000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294, while the sum is 22.

Adding to 30771000121 its reverse (12100017703), we get a palindrome (42871017824).

The spelling of 30771000121 in words is "thirty billion, seven hundred seventy-one million, one hundred twenty-one", and thus it is an aban number.