1001122333231 has 4 divisors (see below), whose sum is σ = 1020011433912. Its totient is φ = 982233232552.

The previous prime is 1001122333229. The next prime is 1001122333249. The reversal of 1001122333231 is 1323332211001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001122333231 - 2¹ = 1001122333229 is a prime.

It is a super-2 number, since 2×1001122333231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001122033231) 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, 9444550261 + ... + 9444550366.

It is an arithmetic number, because the mean of its divisors is an integer number (255002858478).

Almost surely, 2^{1001122333231} is an apocalyptic number.

1001122333231 is a deficient number, since it is larger than the sum of its proper divisors (18889100681).

1001122333231 is an equidigital number, since it uses as much as digits as its factorization.

1001122333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18889100680.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1001122333231 its reverse (1323332211001), we get a palindrome (2324454544232).

The spelling of 1001122333231 in words is "one trillion, one billion, one hundred twenty-two million, three hundred thirty-three thousand, two hundred thirty-one".