20043121011331 has 32 divisors (see below), whose sum is σ = 22840917765120. Its totient is φ = 17420289667200.

The previous prime is 20043121011313. The next prime is 20043121011391. The reversal of 20043121011331 is 13311012134002.

It is a cyclic number.

It is not a de Polignac number, because 20043121011331 - 2²¹ = 20043118914179 is a prime.

It is a super-3 number, since 3×20043121011331³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20043121011391) 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, 476504041 + ... + 476546101.

It is an arithmetic number, because the mean of its divisors is an integer number (713778680160).

Almost surely, 2^{20043121011331} is an apocalyptic number.

20043121011331 is a deficient number, since it is larger than the sum of its proper divisors (2797796753789).

20043121011331 is a wasteful number, since it uses less digits than its factorization.

20043121011331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56707.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20043121011331 its reverse (13311012134002), we get a palindrome (33354133145333).

The spelling of 20043121011331 in words is "twenty trillion, forty-three billion, one hundred twenty-one million, eleven thousand, three hundred thirty-one".