213001222073 has 2 divisors, whose sum is σ = 213001222074. Its totient is φ = 213001222072.

The previous prime is 213001222043. The next prime is 213001222117. The reversal of 213001222073 is 370222100312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112709932729 + 100291289344 = 335723^2 + 316688^2 .

It is a cyclic number.

It is not a de Polignac number, because 213001222073 - 2¹² = 213001217977 is a prime.

It is not a weakly prime, because it can be changed into another prime (213001222003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106500611036 + 106500611037.

It is an arithmetic number, because the mean of its divisors is an integer number (106500611037).

Almost surely, 2^213001222073 is an apocalyptic number.

It is an amenable number.

213001222073 is a deficient number, since it is larger than the sum of its proper divisors (1).

213001222073 is an equidigital number, since it uses as much as digits as its factorization.

213001222073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 213001222073 its reverse (370222100312), we get a palindrome (583223322385).

The spelling of 213001222073 in words is "two hundred thirteen billion, one million, two hundred twenty-two thousand, seventy-three".