20012331001 has 8 divisors (see below), whose sum is σ = 22686043520. Its totient is φ = 17500661712.

The previous prime is 20012330993. The next prime is 20012331013. The reversal of 20012331001 is 10013321002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012331001 - 2³ = 20012330993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012331041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40510545 + ... + 40511038.

It is an arithmetic number, because the mean of its divisors is an integer number (2835755440).

Almost surely, 2^20012331001 is an apocalyptic number.

It is an amenable number.

20012331001 is a deficient number, since it is larger than the sum of its proper divisors (2673712519).

20012331001 is a wasteful number, since it uses less digits than its factorization.

20012331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81021615.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20012331001 its reverse (10013321002), we get a palindrome (30025652003).

Subtracting from 20012331001 its reverse (10013321002), we obtain a palindrome (9999009999).

The spelling of 20012331001 in words is "twenty billion, twelve million, three hundred thirty-one thousand, one".