20320442111001 has 32 divisors (see below), whose sum is σ = 28614882078720. Its totient is φ = 12800797395584.

The previous prime is 20320442110999. The next prime is 20320442111023. The reversal of 20320442111001 is 10011124402302.

It is a cyclic number.

It is not a de Polignac number, because 20320442111001 - 2¹ = 20320442110999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20320442111051) 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, 73218640 + ... + 73495646.

It is an arithmetic number, because the mean of its divisors is an integer number (894215064960).

Almost surely, 2^{20320442111001} is an apocalyptic number.

It is an amenable number.

20320442111001 is a deficient number, since it is larger than the sum of its proper divisors (8294439967719).

20320442111001 is a wasteful number, since it uses less digits than its factorization.

20320442111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289925.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20320442111001 its reverse (10011124402302), we get a palindrome (30331566513303).

The spelling of 20320442111001 in words is "twenty trillion, three hundred twenty billion, four hundred forty-two million, one hundred eleven thousand, one".