1001103221001 has 16 divisors (see below), whose sum is σ = 1440138660800. Its totient is φ = 614924758080.

The previous prime is 1001103220987. The next prime is 1001103221003. The reversal of 1001103221001 is 1001223011001.

It is not a de Polignac number, because 1001103221001 - 2²⁶ = 1001036112137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001103221003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23702851 + ... + 23745048.

It is an arithmetic number, because the mean of its divisors is an integer number (90008666300).

Almost surely, 2^{1001103221001} is an apocalyptic number.

It is an amenable number.

1001103221001 is a deficient number, since it is larger than the sum of its proper divisors (439035439799).

1001103221001 is a wasteful number, since it uses less digits than its factorization.

1001103221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47448456.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1001103221001 its reverse (1001223011001), we get a palindrome (2002326232002).

The spelling of 1001103221001 in words is "one trillion, one billion, one hundred three million, two hundred twenty-one thousand, one".