2021220202213 has 2 divisors, whose sum is σ = 2021220202214. Its totient is φ = 2021220202212.

The previous prime is 2021220202181. The next prime is 2021220202231. The reversal of 2021220202213 is 3122020221202.

Together with next prime (2021220202231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2015485623684 + 5734578529 = 1419678^2 + 75727^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021220202213 - 2⁵ = 2021220202181 is a prime.

It is a super-2 number, since 2×2021220202213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021220202273) 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 as a sum of consecutive naturals, namely, 1010610101106 + 1010610101107.

It is an arithmetic number, because the mean of its divisors is an integer number (1010610101107).

Almost surely, 2^{2021220202213} is an apocalyptic number.

It is an amenable number.

2021220202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021220202213 is an equidigital number, since it uses as much as digits as its factorization.

2021220202213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2021220202213 its reverse (3122020221202), we get a palindrome (5143240423415).

The spelling of 2021220202213 in words is "two trillion, twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred thirteen".