30121444103 has 2 divisors, whose sum is σ = 30121444104. Its totient is φ = 30121444102.

The previous prime is 30121444091. The next prime is 30121444139. The reversal of 30121444103 is 30144412103.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30121444103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121444163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060722051 + 15060722052.

It is an arithmetic number, because the mean of its divisors is an integer number (15060722052).

Almost surely, 2^30121444103 is an apocalyptic number.

30121444103 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121444103 is an equidigital number, since it uses as much as digits as its factorization.

30121444103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 30121444103 its reverse (30144412103), we get a palindrome (60265856206).

The spelling of 30121444103 in words is "thirty billion, one hundred twenty-one million, four hundred forty-four thousand, one hundred three".