20002021021213 has 24 divisors (see below), whose sum is σ = 25639291630400. Its totient is φ = 15585990373800.

The previous prime is 20002021021201. The next prime is 20002021021219. The reversal of 20002021021213 is 31212012020002.

It is a happy number.

It is not a de Polignac number, because 20002021021213 - 2⁹ = 20002021020701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002021021219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240929283 + ... + 241012288.

Almost surely, 2^{20002021021213} is an apocalyptic number.

It is an amenable number.

20002021021213 is a deficient number, since it is larger than the sum of its proper divisors (5637270609187).

20002021021213 is an equidigital number, since it uses as much as digits as its factorization.

20002021021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481941614 (or 481941589 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20002021021213 its reverse (31212012020002), we get a palindrome (51214033041215).

The spelling of 20002021021213 in words is "twenty trillion, two billion, twenty-one million, twenty-one thousand, two hundred thirteen".