202202021213 has 8 divisors (see below), whose sum is σ = 205535933400. Its totient is φ = 198868726080.

The previous prime is 202202021207. The next prime is 202202021261. The reversal of 202202021213 is 312120202202.

It can be written as a sum of positive squares in 4 ways, for example, as 15070508644 + 187131512569 = 122762^2 + 432587^2 .

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 202202021213 - 2¹⁸ = 202201759069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202202021191 and 202202021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202202021713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531431 + ... + 828747.

It is an arithmetic number, because the mean of its divisors is an integer number (25691991675).

Almost surely, 2^202202021213 is an apocalyptic number.

It is an amenable number.

202202021213 is a deficient number, since it is larger than the sum of its proper divisors (3333912187).

202202021213 is a wasteful number, since it uses less digits than its factorization.

202202021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308527.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 202202021213 its reverse (312120202202), we get a palindrome (514322223415).

The spelling of 202202021213 in words is "two hundred two billion, two hundred two million, twenty-one thousand, two hundred thirteen".