222000000073 has 2 divisors, whose sum is σ = 222000000074. Its totient is φ = 222000000072.

The previous prime is 222000000071. The next prime is 222000000077. The reversal of 222000000073 is 370000000222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135897661449 + 86102338624 = 368643^2 + 293432^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000000073 - 2¹ = 222000000071 is a prime.

Together with 222000000071, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 221999999993 and 222000000056.

It is not a weakly prime, because it can be changed into another prime (222000000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000000036 + 111000000037.

It is an arithmetic number, because the mean of its divisors is an integer number (111000000037).

Almost surely, 2^222000000073 is an apocalyptic number.

It is an amenable number.

222000000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

222000000073 is an equidigital number, since it uses as much as digits as its factorization.

222000000073 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 16.

Adding to 222000000073 its reverse (370000000222), we get a palindrome (592000000295).

The spelling of 222000000073 in words is "two hundred twenty-two billion, seventy-three", and thus it is an aban number.