212112073 has 2 divisors, whose sum is σ = 212112074. Its totient is φ = 212112072.

The previous prime is 212112059. The next prime is 212112091. The reversal of 212112073 is 370211212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164942649 + 47169424 = 12843^2 + 6868^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112073 - 2²¹ = 210014921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212112073.

It is not a weakly prime, because it can be changed into another prime (212112023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056036 + 106056037.

It is an arithmetic number, because the mean of its divisors is an integer number (106056037).

Almost surely, 2^212112073 is an apocalyptic number.

It is an amenable number.

212112073 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112073 is an equidigital number, since it uses as much as digits as its factorization.

212112073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 212112073 is about 14564.0678726790. The cubic root of 212112073 is about 596.3782497894.

Adding to 212112073 its reverse (370211212), we get a palindrome (582323285).

The spelling of 212112073 in words is "two hundred twelve million, one hundred twelve thousand, seventy-three".