212011222120073 has 2 divisors, whose sum is σ = 212011222120074. Its totient is φ = 212011222120072.

The previous prime is 212011222120043. The next prime is 212011222120081. The reversal of 212011222120073 is 370021222110212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155282427570169 + 56728794549904 = 12461237^2 + 7531852^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011222120073 - 2²⁰ = 212011221071497 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011222120043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005611060036 + 106005611060037.

It is an arithmetic number, because the mean of its divisors is an integer number (106005611060037).

Almost surely, 2^{212011222120073} is an apocalyptic number.

It is an amenable number.

212011222120073 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011222120073 is an equidigital number, since it uses as much as digits as its factorization.

212011222120073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 212011222120073 its reverse (370021222110212), we get a palindrome (582032444230285).

The spelling of 212011222120073 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-two million, one hundred twenty thousand, seventy-three".