30443101021 has 2 divisors, whose sum is σ = 30443101022. Its totient is φ = 30443101020.

The previous prime is 30443100997. The next prime is 30443101037. The reversal of 30443101021 is 12010134403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23024724121 + 7418376900 = 151739^2 + 86130^2 .

It is a cyclic number.

It is not a de Polignac number, because 30443101021 - 2³¹ = 28295617373 is a prime.

It is a super-2 number, since 2×30443101021² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30443101021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30443101321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221550510 + 15221550511.

It is an arithmetic number, because the mean of its divisors is an integer number (15221550511).

Almost surely, 2^30443101021 is an apocalyptic number.

It is an amenable number.

30443101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30443101021 is an equidigital number, since it uses as much as digits as its factorization.

30443101021 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 30443101021 its reverse (12010134403), we get a palindrome (42453235424).

The spelling of 30443101021 in words is "thirty billion, four hundred forty-three million, one hundred one thousand, twenty-one".