30220020121 has 2 divisors, whose sum is σ = 30220020122. Its totient is φ = 30220020120.

The previous prime is 30220020113. The next prime is 30220020143. The reversal of 30220020121 is 12102002203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16902860121 + 13317160000 = 130011^2 + 115400^2 .

It is an emirp because it is prime and its reverse (12102002203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30220020121 - 2³ = 30220020113 is a prime.

It is a super-2 number, since 2×30220020121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30220020151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110010060 + 15110010061.

It is an arithmetic number, because the mean of its divisors is an integer number (15110010061).

Almost surely, 2^30220020121 is an apocalyptic number.

It is an amenable number.

30220020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30220020121 is an equidigital number, since it uses as much as digits as its factorization.

30220020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 30220020121 its reverse (12102002203), we get a palindrome (42322022324).

The spelling of 30220020121 in words is "thirty billion, two hundred twenty million, twenty thousand, one hundred twenty-one".