212021022113 has 2 divisors, whose sum is σ = 212021022114. Its totient is φ = 212021022112.

The previous prime is 212021022067. The next prime is 212021022133. The reversal of 212021022113 is 311220120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204148541584 + 7872480529 = 451828^2 + 88727^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021022113 - 2¹² = 212021018017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021022091 and 212021022100.

It is not a weakly prime, because it can be changed into another prime (212021022133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010511056 + 106010511057.

It is an arithmetic number, because the mean of its divisors is an integer number (106010511057).

Almost surely, 2^212021022113 is an apocalyptic number.

It is an amenable number.

212021022113 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021022113 is an equidigital number, since it uses as much as digits as its factorization.

212021022113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021022113 its reverse (311220120212), we get a palindrome (523241142325).

The spelling of 212021022113 in words is "two hundred twelve billion, twenty-one million, twenty-two thousand, one hundred thirteen".