1001103121001 has 2 divisors, whose sum is σ = 1001103121002. Its totient is φ = 1001103121000.

The previous prime is 1001103120971. The next prime is 1001103121037. The reversal of 1001103121001 is 1001213011001.

It is a happy number.

1001103121001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628569894976 + 372533226025 = 792824^2 + 610355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001103121001 - 2⁶ = 1001103120937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001103121061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500551560500 + 500551560501.

It is an arithmetic number, because the mean of its divisors is an integer number (500551560501).

Almost surely, 2^{1001103121001} is an apocalyptic number.

It is an amenable number.

1001103121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001103121001 is an equidigital number, since it uses as much as digits as its factorization.

1001103121001 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 11.

Adding to 1001103121001 its reverse (1001213011001), we get a palindrome (2002316132002).

The spelling of 1001103121001 in words is "one trillion, one billion, one hundred three million, one hundred twenty-one thousand, one".