1001320211023 has 16 divisors (see below), whose sum is σ = 1107698866560. Its totient is φ = 897588338400.

The previous prime is 1001320210999. The next prime is 1001320211033. The reversal of 1001320211023 is 3201120231001.

It is a cyclic number.

It is not a de Polignac number, because 1001320211023 - 2²¹ = 1001318113871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001320210988 and 1001320211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001320211033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1986753 + ... + 2439226.

It is an arithmetic number, because the mean of its divisors is an integer number (69231179160).

Almost surely, 2^{1001320211023} is an apocalyptic number.

1001320211023 is a deficient number, since it is larger than the sum of its proper divisors (106378655537).

1001320211023 is a wasteful number, since it uses less digits than its factorization.

1001320211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426278.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1001320211023 its reverse (3201120231001), we get a palindrome (4202440442024).

The spelling of 1001320211023 in words is "one trillion, one billion, three hundred twenty million, two hundred eleven thousand, twenty-three".