2101115321 has 8 divisors (see below), whose sum is σ = 2164223424. Its totient is φ = 2038654800.

The previous prime is 2101115267. The next prime is 2101115327. The reversal of 2101115321 is 1235111012.

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 2101115321 - 2³⁰ = 1027373497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101115321.

It is not an unprimeable number, because it can be changed into a prime (2101115327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155306 + ... + 168291.

It is an arithmetic number, because the mean of its divisors is an integer number (270527928).

Almost surely, 2^2101115321 is an apocalyptic number.

It is an amenable number.

2101115321 is a deficient number, since it is larger than the sum of its proper divisors (63108103).

2101115321 is a wasteful number, since it uses less digits than its factorization.

2101115321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323791.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 2101115321 is about 45837.9244839903. The cubic root of 2101115321 is about 1280.8058322983.

Adding to 2101115321 its reverse (1235111012), we get a palindrome (3336226333).

The spelling of 2101115321 in words is "two billion, one hundred one million, one hundred fifteen thousand, three hundred twenty-one".