2001112213 has 2 divisors, whose sum is σ = 2001112214. Its totient is φ = 2001112212.

The previous prime is 2001112207. The next prime is 2001112229. The reversal of 2001112213 is 3122111002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1978292484 + 22819729 = 44478^2 + 4777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001112213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001112193 and 2001112202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001112273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000556106 + 1000556107.

It is an arithmetic number, because the mean of its divisors is an integer number (1000556107).

Almost surely, 2^2001112213 is an apocalyptic number.

It is an amenable number.

2001112213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001112213 is an equidigital number, since it uses as much as digits as its factorization.

2001112213 is an evil number, because the sum of its binary digits is even.

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

The square root of 2001112213 is about 44733.7927410587. The cubic root of 2001112213 is about 1260.1545567104.

Adding to 2001112213 its reverse (3122111002), we get a palindrome (5123223215).

The spelling of 2001112213 in words is "two billion, one million, one hundred twelve thousand, two hundred thirteen".