30121330207 has 2 divisors, whose sum is σ = 30121330208. Its totient is φ = 30121330206.

The previous prime is 30121330181. The next prime is 30121330237. The reversal of 30121330207 is 70203312103.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70203312103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30121330207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121330237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060665103 + 15060665104.

It is an arithmetic number, because the mean of its divisors is an integer number (15060665104).

Almost surely, 2^30121330207 is an apocalyptic number.

30121330207 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121330207 is an equidigital number, since it uses as much as digits as its factorization.

30121330207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The spelling of 30121330207 in words is "thirty billion, one hundred twenty-one million, three hundred thirty thousand, two hundred seven".