100103110021 has 2 divisors, whose sum is σ = 100103110022. Its totient is φ = 100103110020.

The previous prime is 100103109989. The next prime is 100103110027. The reversal of 100103110021 is 120011301001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91222120900 + 8880989121 = 302030^2 + 94239^2 .

It is a cyclic number.

It is not a de Polignac number, because 100103110021 - 2⁵ = 100103109989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100103110027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50051555010 + 50051555011.

It is an arithmetic number, because the mean of its divisors is an integer number (50051555011).

Almost surely, 2^100103110021 is an apocalyptic number.

It is an amenable number.

100103110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100103110021 is an equidigital number, since it uses as much as digits as its factorization.

100103110021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 100103110021 its reverse (120011301001), we get a palindrome (220114411022).

The spelling of 100103110021 in words is "one hundred billion, one hundred three million, one hundred ten thousand, twenty-one".