212120202021073 has 2 divisors, whose sum is σ = 212120202021074. Its totient is φ = 212120202021072.

The previous prime is 212120202021041. The next prime is 212120202021107. The reversal of 212120202021073 is 370120202021212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211819265296144 + 300936724929 = 14554012^2 + 548577^2 .

It is a cyclic number.

It is not a de Polignac number, because 212120202021073 - 2⁵ = 212120202021041 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120202421073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060101010536 + 106060101010537.

It is an arithmetic number, because the mean of its divisors is an integer number (106060101010537).

Almost surely, 2^{212120202021073} is an apocalyptic number.

It is an amenable number.

212120202021073 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120202021073 is an equidigital number, since it uses as much as digits as its factorization.

212120202021073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 212120202021073 its reverse (370120202021212), we get a palindrome (582240404042285).

The spelling of 212120202021073 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred two million, twenty-one thousand, seventy-three".