221001101333121 has 16 divisors (see below), whose sum is σ = 302632687800000. Its totient is φ = 143351805659328.

The previous prime is 221001101333113. The next prime is 221001101333141. The reversal of 221001101333121 is 121333101100122.

221001101333121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221001101333121 - 2³ = 221001101333113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221001101333101) 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, 73874470 + ... + 76807808.

It is an arithmetic number, because the mean of its divisors is an integer number (18914542987500).

Almost surely, 2^{221001101333121} is an apocalyptic number.

It is an amenable number.

221001101333121 is a deficient number, since it is larger than the sum of its proper divisors (81631586466879).

221001101333121 is a wasteful number, since it uses less digits than its factorization.

221001101333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612128.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 221001101333121 its reverse (121333101100122), we get a palindrome (342334202433243).

The spelling of 221001101333121 in words is "two hundred twenty-one trillion, one billion, one hundred one million, three hundred thirty-three thousand, one hundred twenty-one".