1001101020221 has 8 divisors (see below), whose sum is σ = 1003687070400. Its totient is φ = 998518020448.

The previous prime is 1001101020209. The next prime is 1001101020281. The reversal of 1001101020221 is 1220201011001.

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 1001101020221 - 2²⁶ = 1001033911357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001101020281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104651 + ... + 1418856.

It is an arithmetic number, because the mean of its divisors is an integer number (125460883800).

Almost surely, 2^{1001101020221} is an apocalyptic number.

It is an amenable number.

1001101020221 is a deficient number, since it is larger than the sum of its proper divisors (2586050179).

1001101020221 is a wasteful number, since it uses less digits than its factorization.

1001101020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525203.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001101020221 its reverse (1220201011001), we get a palindrome (2221302031222).

The spelling of 1001101020221 in words is "one trillion, one billion, one hundred one million, twenty thousand, two hundred twenty-one".