1001220201001 has 8 divisors (see below), whose sum is σ = 1044762174720. Its totient is φ = 957679115712.

The previous prime is 1001220200983. The next prime is 1001220201011. The reversal of 1001220201001 is 1001020221001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001220201001 - 2²¹ = 1001218103849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001220201011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3208176 + ... + 3506398.

It is an arithmetic number, because the mean of its divisors is an integer number (130595271840).

Almost surely, 2^{1001220201001} is an apocalyptic number.

It is an amenable number.

1001220201001 is a deficient number, since it is larger than the sum of its proper divisors (43541973719).

1001220201001 is a wasteful number, since it uses less digits than its factorization.

1001220201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444215.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001220201001 its reverse (1001020221001), we get a palindrome (2002240422002).

The spelling of 1001220201001 in words is "one trillion, one billion, two hundred twenty million, two hundred one thousand, one".