30125344121 has 2 divisors, whose sum is σ = 30125344122. Its totient is φ = 30125344120.

The previous prime is 30125344097. The next prime is 30125344147. The reversal of 30125344121 is 12144352103.

It is a happy number.

It is an a-pointer prime, because the next prime (30125344147) can be obtained adding 30125344121 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23146579600 + 6978764521 = 152140^2 + 83539^2 .

It is a cyclic number.

It is not a de Polignac number, because 30125344121 - 2¹⁴ = 30125327737 is a prime.

It is not a weakly prime, because it can be changed into another prime (30125340121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15062672060 + 15062672061.

It is an arithmetic number, because the mean of its divisors is an integer number (15062672061).

Almost surely, 2^30125344121 is an apocalyptic number.

It is an amenable number.

30125344121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30125344121 is an equidigital number, since it uses as much as digits as its factorization.

30125344121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 30125344121 its reverse (12144352103), we get a palindrome (42269696224).

The spelling of 30125344121 in words is "thirty billion, one hundred twenty-five million, three hundred forty-four thousand, one hundred twenty-one".