30141521021 has 2 divisors, whose sum is σ = 30141521022. Its totient is φ = 30141521020.

The previous prime is 30141520993. The next prime is 30141521027. The reversal of 30141521021 is 12012514103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23107344121 + 7034176900 = 152011^2 + 83870^2 .

It is a cyclic number.

It is not a de Polignac number, because 30141521021 - 2¹⁴ = 30141504637 is a prime.

It is a super-2 number, since 2×30141521021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30141520984 and 30141521002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30141521027) 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, 15070760510 + 15070760511.

It is an arithmetic number, because the mean of its divisors is an integer number (15070760511).

Almost surely, 2^30141521021 is an apocalyptic number.

It is an amenable number.

30141521021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30141521021 is an equidigital number, since it uses as much as digits as its factorization.

30141521021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 30141521021 in words is "thirty billion, one hundred forty-one million, five hundred twenty-one thousand, twenty-one".