1233001322173 has 2 divisors, whose sum is σ = 1233001322174. Its totient is φ = 1233001322172.

The previous prime is 1233001322099. The next prime is 1233001322239. The reversal of 1233001322173 is 3712231003321.

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., 1115721100729 + 117280221444 = 1056277^2 + 342462^2 .

It is an emirp because it is prime and its reverse (3712231003321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1233001322173 - 2²¹ = 1232999225021 is a prime.

It is a super-2 number, since 2×1233001322173² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233001323173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616500661086 + 616500661087.

It is an arithmetic number, because the mean of its divisors is an integer number (616500661087).

Almost surely, 2^{1233001322173} is an apocalyptic number.

It is an amenable number.

1233001322173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233001322173 is an equidigital number, since it uses as much as digits as its factorization.

1233001322173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 1233001322173 its reverse (3712231003321), we get a palindrome (4945232325494).

The spelling of 1233001322173 in words is "one trillion, two hundred thirty-three billion, one million, three hundred twenty-two thousand, one hundred seventy-three".