2112135321 has 4 divisors (see below), whose sum is σ = 2816180432. Its totient is φ = 1408090212.

The previous prime is 2112135317. The next prime is 2112135373. The reversal of 2112135321 is 1235312112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2112135321 - 2² = 2112135317 is a prime.

It is a super-2 number, since 2×2112135321² = 8922231228431546082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112135821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352022551 + ... + 352022556.

It is an arithmetic number, because the mean of its divisors is an integer number (704045108).

Almost surely, 2^2112135321 is an apocalyptic number.

It is an amenable number.

2112135321 is a deficient number, since it is larger than the sum of its proper divisors (704045111).

2112135321 is an equidigital number, since it uses as much as digits as its factorization.

2112135321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704045110.

The product of its digits is 360, while the sum is 21.

The square root of 2112135321 is about 45957.9734213771. The cubic root of 2112135321 is about 1283.0411333546.

Adding to 2112135321 its reverse (1235312112), we get a palindrome (3347447433).

The spelling of 2112135321 in words is "two billion, one hundred twelve million, one hundred thirty-five thousand, three hundred twenty-one".