30100261021 has 2 divisors, whose sum is σ = 30100261022. Its totient is φ = 30100261020.

The previous prime is 30100261019. The next prime is 30100261049. The reversal of 30100261021 is 12016200103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27097768996 + 3002492025 = 164614^2 + 54795^2 .

It is a cyclic number.

It is not a de Polignac number, because 30100261021 - 2¹ = 30100261019 is a prime.

Together with 30100261019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30100260986 and 30100261004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30100262021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15050130510 + 15050130511.

It is an arithmetic number, because the mean of its divisors is an integer number (15050130511).

Almost surely, 2^30100261021 is an apocalyptic number.

It is an amenable number.

30100261021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30100261021 is an equidigital number, since it uses as much as digits as its factorization.

30100261021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30100261021 its reverse (12016200103), we get a palindrome (42116461124).

The spelling of 30100261021 in words is "thirty billion, one hundred million, two hundred sixty-one thousand, twenty-one".