30121212221239 has 2 divisors, whose sum is σ = 30121212221240. Its totient is φ = 30121212221238.

The previous prime is 30121212221231. The next prime is 30121212221327. The reversal of 30121212221239 is 93212221212103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30121212221239 - 2³ = 30121212221231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30121212221239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121212221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060606110619 + 15060606110620.

It is an arithmetic number, because the mean of its divisors is an integer number (15060606110620).

Almost surely, 2^{30121212221239} is an apocalyptic number.

30121212221239 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121212221239 is an equidigital number, since it uses as much as digits as its factorization.

30121212221239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 30121212221239 in words is "thirty trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred thirty-nine".