212113073 has 2 divisors, whose sum is σ = 212113074. Its totient is φ = 212113072.

The previous prime is 212113039. The next prime is 212113079. The reversal of 212113073 is 370311212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111872929 + 100240144 = 10577^2 + 10012^2 .

It is a cyclic number.

It is not a de Polignac number, because 212113073 - 2⁶ = 212113009 is a prime.

It is not a weakly prime, because it can be changed into another prime (212113079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056536 + 106056537.

It is an arithmetic number, because the mean of its divisors is an integer number (106056537).

Almost surely, 2^212113073 is an apocalyptic number.

It is an amenable number.

212113073 is a deficient number, since it is larger than the sum of its proper divisors (1).

212113073 is an equidigital number, since it uses as much as digits as its factorization.

212113073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 212113073 is about 14564.1022037062. The cubic root of 212113073 is about 596.3791869941.

Adding to 212113073 its reverse (370311212), we get a palindrome (582424285).

The spelling of 212113073 in words is "two hundred twelve million, one hundred thirteen thousand, seventy-three".