2113321 has 24 divisors (see below), whose sum is σ = 2708640. Its totient is φ = 1636992.

The previous prime is 2113291. The next prime is 2113333. The reversal of 2113321 is 1233112.

It is not a de Polignac number, because 2113321 - 2⁵ = 2113289 is a prime.

It is a super-2 number, since 2×2113321² = 8932251298082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35790 + ... + 35848.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

2^2113321 is an apocalyptic number.

It is an amenable number.

2113321 is a deficient number, since it is larger than the sum of its proper divisors (595319).

2113321 is a wasteful number, since it uses less digits than its factorization.

2113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 126 counting only the distinct ones).

The product of its digits is 36, while the sum is 13.

The square root of 2113321 is about 1453.7265905252. The cubic root of 2113321 is about 128.3281173270.

Adding to 2113321 its reverse (1233112), we get a palindrome (3346433).

The spelling of 2113321 in words is "two million, one hundred thirteen thousand, three hundred twenty-one".