202121022213 has 24 divisors (see below), whose sum is σ = 332341289280. Its totient is φ = 117171605760.

The previous prime is 202121022199. The next prime is 202121022293. The reversal of 202121022213 is 312220121202.

It is not a de Polignac number, because 202121022213 - 2¹⁰ = 202121021189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121022293) 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, 44380908 + ... + 44385461.

It is an arithmetic number, because the mean of its divisors is an integer number (13847553720).

Almost surely, 2^202121022213 is an apocalyptic number.

202121022213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

202121022213 is a deficient number, since it is larger than the sum of its proper divisors (130220267067).

202121022213 is a wasteful number, since it uses less digits than its factorization.

202121022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88766409 (or 88766406 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 202121022213 its reverse (312220121202), we get a palindrome (514341143415).

The spelling of 202121022213 in words is "two hundred two billion, one hundred twenty-one million, twenty-two thousand, two hundred thirteen".