2001213213 has 8 divisors (see below), whose sum is σ = 2668605408. Its totient is φ = 1333981584.

The previous prime is 2001213173. The next prime is 2001213241. The reversal of 2001213213 is 3123121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001213213 - 2¹² = 2001209117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001213192 and 2001213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001213113) 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, 7195 + ... + 63672.

It is an arithmetic number, because the mean of its divisors is an integer number (333575676).

Almost surely, 2^2001213213 is an apocalyptic number.

It is an amenable number.

2001213213 is a deficient number, since it is larger than the sum of its proper divisors (667392195).

2001213213 is an equidigital number, since it uses as much as digits as its factorization.

2001213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80283.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2001213213 is about 44734.9216272925. The cubic root of 2001213213 is about 1260.1757571656.

Adding to 2001213213 its reverse (3123121002), we get a palindrome (5124334215).

The spelling of 2001213213 in words is "two billion, one million, two hundred thirteen thousand, two hundred thirteen".