21103101000361 has 2 divisors, whose sum is σ = 21103101000362. Its totient is φ = 21103101000360.

The previous prime is 21103101000313. The next prime is 21103101000379. The reversal of 21103101000361 is 16300010130112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16189807606336 + 4913293394025 = 4023656^2 + 2216595^2 .

It is a cyclic number.

It is not a de Polignac number, because 21103101000361 - 2¹⁷ = 21103100869289 is a prime.

It is not a weakly prime, because it can be changed into another prime (21103101000661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551550500180 + 10551550500181.

It is an arithmetic number, because the mean of its divisors is an integer number (10551550500181).

Almost surely, 2^{21103101000361} is an apocalyptic number.

It is an amenable number.

21103101000361 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103101000361 is an equidigital number, since it uses as much as digits as its factorization.

21103101000361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21103101000361 its reverse (16300010130112), we get a palindrome (37403111130473).

The spelling of 21103101000361 in words is "twenty-one trillion, one hundred three billion, one hundred one million, three hundred sixty-one", and thus it is an aban number.