30020231202121 has 2 divisors, whose sum is σ = 30020231202122. Its totient is φ = 30020231202120.

The previous prime is 30020231202043. The next prime is 30020231202187. The reversal of 30020231202121 is 12120213202003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21744137889721 + 8276093312400 = 4663061^2 + 2876820^2 .

It is an emirp because it is prime and its reverse (12120213202003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30020231202121 - 2¹⁵ = 30020231169353 is a prime.

It is not a weakly prime, because it can be changed into another prime (30020231209121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010115601060 + 15010115601061.

It is an arithmetic number, because the mean of its divisors is an integer number (15010115601061).

Almost surely, 2^{30020231202121} is an apocalyptic number.

It is an amenable number.

30020231202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30020231202121 is an equidigital number, since it uses as much as digits as its factorization.

30020231202121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30020231202121 its reverse (12120213202003), we get a palindrome (42140444404124).

The spelling of 30020231202121 in words is "thirty trillion, twenty billion, two hundred thirty-one million, two hundred two thousand, one hundred twenty-one".