100221001221001 has 16 divisors (see below), whose sum is σ = 101076580249920. Its totient is φ = 99368620646400.

The previous prime is 100221001220999. The next prime is 100221001221053. The reversal of 100221001221001 is 100122100122001.

It is a cyclic number.

It is not a de Polignac number, because 100221001221001 - 2¹ = 100221001220999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221001221301) 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, 123447201 + ... + 124256401.

It is an arithmetic number, because the mean of its divisors is an integer number (6317286265620).

Almost surely, 2^{100221001221001} is an apocalyptic number.

It is an amenable number.

100221001221001 is a deficient number, since it is larger than the sum of its proper divisors (855579028919).

100221001221001 is a wasteful number, since it uses less digits than its factorization.

100221001221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811176.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100221001221001 its reverse (100122100122001), we get a palindrome (200343101343002).

The spelling of 100221001221001 in words is "one hundred trillion, two hundred twenty-one billion, one million, two hundred twenty-one thousand, one".