210001212073 has 2 divisors, whose sum is σ = 210001212074. Its totient is φ = 210001212072.

The previous prime is 210001211999. The next prime is 210001212151. The reversal of 210001212073 is 370212100012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205415619984 + 4585592089 = 453228^2 + 67717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210001212073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210001212073.

It is not a weakly prime, because it can be changed into another prime (210001218073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000606036 + 105000606037.

It is an arithmetic number, because the mean of its divisors is an integer number (105000606037).

Almost surely, 2^210001212073 is an apocalyptic number.

It is an amenable number.

210001212073 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001212073 is an equidigital number, since it uses as much as digits as its factorization.

210001212073 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.

Adding to 210001212073 its reverse (370212100012), we get a palindrome (580213312085).

The spelling of 210001212073 in words is "two hundred ten billion, one million, two hundred twelve thousand, seventy-three".