201021131013321 has 16 divisors (see below), whose sum is σ = 270564488054784. Its totient is φ = 132746221186704.

The previous prime is 201021131013257. The next prime is 201021131013403. The reversal of 201021131013321 is 123310131120102.

It is not a de Polignac number, because 201021131013321 - 2⁶ = 201021131013257 is a prime.

It is a super-2 number, since 2×201021131013321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201021131013121) 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, 33543861 + ... + 39079826.

It is an arithmetic number, because the mean of its divisors is an integer number (16910280503424).

Almost surely, 2^{201021131013321} is an apocalyptic number.

It is an amenable number.

201021131013321 is a deficient number, since it is larger than the sum of its proper divisors (69543357041463).

201021131013321 is a wasteful number, since it uses less digits than its factorization.

201021131013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72632420.

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

Adding to 201021131013321 its reverse (123310131120102), we get a palindrome (324331262133423).

The spelling of 201021131013321 in words is "two hundred one trillion, twenty-one billion, one hundred thirty-one million, thirteen thousand, three hundred twenty-one".