20331124401 has 16 divisors (see below), whose sum is σ = 32611328000. Its totient is φ = 11006322768.

The previous prime is 20331124399. The next prime is 20331124409. The reversal of 20331124401 is 10442113302.

It is not a de Polignac number, because 20331124401 - 2¹ = 20331124399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331124409) 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 15 ways as a sum of consecutive naturals, for example, 25477201 + ... + 25477998.

It is an arithmetic number, because the mean of its divisors is an integer number (2038208000).

Almost surely, 2^20331124401 is an apocalyptic number.

20331124401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20331124401 is a deficient number, since it is larger than the sum of its proper divisors (12280203599).

20331124401 is a wasteful number, since it uses less digits than its factorization.

20331124401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50955228.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20331124401 its reverse (10442113302), we get a palindrome (30773237703).

The spelling of 20331124401 in words is "twenty billion, three hundred thirty-one million, one hundred twenty-four thousand, four hundred one".