30100021321 has 2 divisors, whose sum is σ = 30100021322. Its totient is φ = 30100021320.

The previous prime is 30100021319. The next prime is 30100021387. The reversal of 30100021321 is 12312000103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28576212025 + 1523809296 = 169045^2 + 39036^2 .

It is a cyclic number.

It is not a de Polignac number, because 30100021321 - 2¹ = 30100021319 is a prime.

It is a super-2 number, since 2×30100021321² (a number of 22 digits) contains 22 as substring.

Together with 30100021319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30100021421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15050010660 + 15050010661.

It is an arithmetic number, because the mean of its divisors is an integer number (15050010661).

Almost surely, 2^30100021321 is an apocalyptic number.

It is an amenable number.

30100021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30100021321 is an equidigital number, since it uses as much as digits as its factorization.

30100021321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30100021321 its reverse (12312000103), we get a palindrome (42412021424).

The spelling of 30100021321 in words is "thirty billion, one hundred million, twenty-one thousand, three hundred twenty-one".