30121221301 has 2 divisors, whose sum is σ = 30121221302. Its totient is φ = 30121221300.

The previous prime is 30121221283. The next prime is 30121221391. The reversal of 30121221301 is 10312212103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26495375076 + 3625846225 = 162774^2 + 60215^2 .

It is a cyclic number.

It is not a de Polignac number, because 30121221301 - 2⁷ = 30121221173 is a prime.

It is a super-2 number, since 2×30121221301² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121221391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060610650 + 15060610651.

It is an arithmetic number, because the mean of its divisors is an integer number (15060610651).

Almost surely, 2^30121221301 is an apocalyptic number.

It is an amenable number.

30121221301 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121221301 is an equidigital number, since it uses as much as digits as its factorization.

30121221301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30121221301 its reverse (10312212103), we get a palindrome (40433433404).

The spelling of 30121221301 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-one thousand, three hundred one".