30301121021 has 2 divisors, whose sum is σ = 30301121022. Its totient is φ = 30301121020.

The previous prime is 30301120981. The next prime is 30301121069. The reversal of 30301121021 is 12012110303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19467225625 + 10833895396 = 139525^2 + 104086^2 .

It is an emirp because it is prime and its reverse (12012110303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30301121021 - 2²² = 30296926717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30301120987 and 30301121005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30301126021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15150560510 + 15150560511.

It is an arithmetic number, because the mean of its divisors is an integer number (15150560511).

Almost surely, 2^30301121021 is an apocalyptic number.

It is an amenable number.

30301121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30301121021 is an equidigital number, since it uses as much as digits as its factorization.

30301121021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30301121021 its reverse (12012110303), we get a palindrome (42313231324).

The spelling of 30301121021 in words is "thirty billion, three hundred one million, one hundred twenty-one thousand, twenty-one".