30213244121 has 2 divisors, whose sum is σ = 30213244122. Its totient is φ = 30213244120.

The previous prime is 30213244111. The next prime is 30213244141. The reversal of 30213244121 is 12144231203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30202616521 + 10627600 = 173789^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 30213244121 - 2¹⁰ = 30213243097 is a prime.

It is not a weakly prime, because it can be changed into another prime (30213244111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106622060 + 15106622061.

It is an arithmetic number, because the mean of its divisors is an integer number (15106622061).

Almost surely, 2^30213244121 is an apocalyptic number.

It is an amenable number.

30213244121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30213244121 is an equidigital number, since it uses as much as digits as its factorization.

30213244121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 30213244121 its reverse (12144231203), we get a palindrome (42357475324).

The spelling of 30213244121 in words is "thirty billion, two hundred thirteen million, two hundred forty-four thousand, one hundred twenty-one".