2000021213 has 4 divisors (see below), whose sum is σ = 2032808508. Its totient is φ = 1967233920.

The previous prime is 2000021207. The next prime is 2000021227. The reversal of 2000021213 is 3121200002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 791972164 + 1208049049 = 28142^2 + 34757^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000021213 - 2¹⁴ = 2000004829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000021194 and 2000021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000021293) 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, 16393556 + ... + 16393677.

It is an arithmetic number, because the mean of its divisors is an integer number (508202127).

Almost surely, 2^2000021213 is an apocalyptic number.

It is an amenable number.

2000021213 is a deficient number, since it is larger than the sum of its proper divisors (32787295).

2000021213 is an equidigital number, since it uses as much as digits as its factorization.

2000021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32787294.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2000021213 is about 44721.5967179169. The cubic root of 2000021213 is about 1259.9255043300.

Adding to 2000021213 its reverse (3121200002), we get a palindrome (5121221215).

The spelling of 2000021213 in words is "two billion, twenty-one thousand, two hundred thirteen".