30013221312121 has 2 divisors, whose sum is σ = 30013221312122. Its totient is φ = 30013221312120.

The previous prime is 30013221312079. The next prime is 30013221312131. The reversal of 30013221312121 is 12121312231003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21363475620096 + 8649745692025 = 4622064^2 + 2941045^2 .

It is a cyclic number.

It is not a de Polignac number, because 30013221312121 - 2¹⁷ = 30013221181049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30013221312092 and 30013221312101.

It is not a weakly prime, because it can be changed into another prime (30013221312131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006610656060 + 15006610656061.

It is an arithmetic number, because the mean of its divisors is an integer number (15006610656061).

Almost surely, 2^{30013221312121} is an apocalyptic number.

It is an amenable number.

30013221312121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30013221312121 is an equidigital number, since it uses as much as digits as its factorization.

30013221312121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 30013221312121 its reverse (12121312231003), we get a palindrome (42134533543124).

The spelling of 30013221312121 in words is "thirty trillion, thirteen billion, two hundred twenty-one million, three hundred twelve thousand, one hundred twenty-one".