30122101021 has 2 divisors, whose sum is σ = 30122101022. Its totient is φ = 30122101020.

The previous prime is 30122101013. The next prime is 30122101027. The reversal of 30122101021 is 12010122103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20617800921 + 9504300100 = 143589^2 + 97490^2 .

It is a cyclic number.

It is not a de Polignac number, because 30122101021 - 2³ = 30122101013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30122100992 and 30122101010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30122101027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061050510 + 15061050511.

It is an arithmetic number, because the mean of its divisors is an integer number (15061050511).

Almost surely, 2^30122101021 is an apocalyptic number.

It is an amenable number.

30122101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30122101021 is an equidigital number, since it uses as much as digits as its factorization.

30122101021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 30122101021 its reverse (12010122103), we get a palindrome (42132223124).

The spelling of 30122101021 in words is "thirty billion, one hundred twenty-two million, one hundred one thousand, twenty-one".