30124221979 has 2 divisors, whose sum is σ = 30124221980. Its totient is φ = 30124221978.

The previous prime is 30124221977. The next prime is 30124222039. The reversal of 30124221979 is 97912242103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30124221979 - 2¹ = 30124221977 is a prime.

Together with 30124221977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30124221977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15062110989 + 15062110990.

It is an arithmetic number, because the mean of its divisors is an integer number (15062110990).

Almost surely, 2^30124221979 is an apocalyptic number.

30124221979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30124221979 is an equidigital number, since it uses as much as digits as its factorization.

30124221979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 30124221979 in words is "thirty billion, one hundred twenty-four million, two hundred twenty-one thousand, nine hundred seventy-nine".