1001123203273 has 2 divisors, whose sum is σ = 1001123203274. Its totient is φ = 1001123203272.

The previous prime is 1001123203189. The next prime is 1001123203313. The reversal of 1001123203273 is 3723023211001.

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., 996786585664 + 4336617609 = 998392^2 + 65853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001123203273 - 2²⁵ = 1001089648841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001123233273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500561601636 + 500561601637.

It is an arithmetic number, because the mean of its divisors is an integer number (500561601637).

Almost surely, 2^{1001123203273} is an apocalyptic number.

It is an amenable number.

1001123203273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001123203273 is an equidigital number, since it uses as much as digits as its factorization.

1001123203273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 1001123203273 its reverse (3723023211001), we get a palindrome (4724146414274).

The spelling of 1001123203273 in words is "one trillion, one billion, one hundred twenty-three million, two hundred three thousand, two hundred seventy-three".