2001101320221 has 32 divisors (see below), whose sum is σ = 2884880351232. Its totient is φ = 1230205447680.

The previous prime is 2001101320201. The next prime is 2001101320291. The reversal of 2001101320221 is 1220231011002.

It is not a de Polignac number, because 2001101320221 - 2⁶ = 2001101320157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001101320221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001101320201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1216020 + ... + 2341133.

It is an arithmetic number, because the mean of its divisors is an integer number (90152510976).

Almost surely, 2^{2001101320221} is an apocalyptic number.

It is an amenable number.

2001101320221 is a deficient number, since it is larger than the sum of its proper divisors (883779031011).

2001101320221 is a wasteful number, since it uses less digits than its factorization.

2001101320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557473.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2001101320221 its reverse (1220231011002), we get a palindrome (3221332331223).

The spelling of 2001101320221 in words is "two trillion, one billion, one hundred one million, three hundred twenty thousand, two hundred twenty-one".