2001011213 has 8 divisors (see below), whose sum is σ = 2038072608. Its totient is φ = 1964161584.

The previous prime is 2001011203. The next prime is 2001011251. The reversal of 2001011213 is 3121101002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001011213 - 2¹⁴ = 2000994829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001011194 and 2001011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33806 + ... + 71727.

It is an arithmetic number, because the mean of its divisors is an integer number (254759076).

Almost surely, 2^2001011213 is an apocalyptic number.

It is an amenable number.

2001011213 is a deficient number, since it is larger than the sum of its proper divisors (37061395).

2001011213 is a wasteful number, since it uses less digits than its factorization.

2001011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105883.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2001011213 is about 44732.6638263361. The cubic root of 2001011213 is about 1260.1333555420.

Adding to 2001011213 its reverse (3121101002), we get a palindrome (5122112215).

The spelling of 2001011213 in words is "two billion, one million, eleven thousand, two hundred thirteen".