2112321001 has 4 divisors (see below), whose sum is σ = 2414081152. Its totient is φ = 1810560852.

The previous prime is 2112320971. The next prime is 2112321011. The reversal of 2112321001 is 1001232112.

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 a cyclic number.

It is not a de Polignac number, because 2112321001 - 2⁹ = 2112320489 is a prime.

It is a super-2 number, since 2×2112321001² = 8923800022531284002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112321011) 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, 150880065 + ... + 150880078.

It is an arithmetic number, because the mean of its divisors is an integer number (603520288).

Almost surely, 2^2112321001 is an apocalyptic number.

It is an amenable number.

2112321001 is a deficient number, since it is larger than the sum of its proper divisors (301760151).

2112321001 is an equidigital number, since it uses as much as digits as its factorization.

2112321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301760150.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2112321001 is about 45959.9934834634. The cubic root of 2112321001 is about 1283.0787300771.

Adding to 2112321001 its reverse (1001232112), we get a palindrome (3113553113).

Subtracting from 2112321001 its reverse (1001232112), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 21123 and 21001, that added together give a palindrome (42124).

The spelling of 2112321001 in words is "two billion, one hundred twelve million, three hundred twenty-one thousand, one".