1001011320233 has 4 divisors (see below), whose sum is σ = 1001146727508. Its totient is φ = 1000875912960.

The previous prime is 1001011320227. The next prime is 1001011320269. The reversal of 1001011320233 is 3320231101001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137613547369 + 863397772864 = 370963^2 + 929192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001011320233 is a prime.

It is a super-2 number, since 2×1001011320233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001011323233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67692548 + ... + 67707333.

It is an arithmetic number, because the mean of its divisors is an integer number (250286681877).

Almost surely, 2^{1001011320233} is an apocalyptic number.

It is an amenable number.

1001011320233 is a deficient number, since it is larger than the sum of its proper divisors (135407275).

1001011320233 is an equidigital number, since it uses as much as digits as its factorization.

1001011320233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135407274.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1001011320233 its reverse (3320231101001), we get a palindrome (4321242421234).

The spelling of 1001011320233 in words is "one trillion, one billion, eleven million, three hundred twenty thousand, two hundred thirty-three".