1001123212323 has 32 divisors (see below), whose sum is σ = 1453990785856. Its totient is φ = 609027268608.

The previous prime is 1001123212319. The next prime is 1001123212339. The reversal of 1001123212323 is 3232123211001.

It is not a de Polignac number, because 1001123212323 - 2² = 1001123212319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001123212323.

It is not an unprimeable number, because it can be changed into a prime (1001123212373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3166815 + ... + 3468567.

It is an arithmetic number, because the mean of its divisors is an integer number (45437212058).

Almost surely, 2^{1001123212323} is an apocalyptic number.

1001123212323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001123212323 is a deficient number, since it is larger than the sum of its proper divisors (452867573533).

1001123212323 is a wasteful number, since it uses less digits than its factorization.

1001123212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302743.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1001123212323 its reverse (3232123211001), we get a palindrome (4233246423324).

The spelling of 1001123212323 in words is "one trillion, one billion, one hundred twenty-three million, two hundred twelve thousand, three hundred twenty-three".