2021405232041 has 4 divisors (see below), whose sum is σ = 2176897942212. Its totient is φ = 1865912521872.

The previous prime is 2021405232017. The next prime is 2021405232157. The reversal of 2021405232041 is 1402325041202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110087922025 + 1911317310016 = 331795^2 + 1382504^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021405232041 - 2¹⁸ = 2021404969897 is a prime.

It is a super-2 number, since 2×2021405232041² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021405232041.

It is not an unprimeable number, because it can be changed into a prime (2021405232001) 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 3 ways as a sum of consecutive naturals, for example, 77746355066 + ... + 77746355091.

It is an arithmetic number, because the mean of its divisors is an integer number (544224485553).

Almost surely, 2^{2021405232041} is an apocalyptic number.

It is an amenable number.

2021405232041 is a deficient number, since it is larger than the sum of its proper divisors (155492710171).

2021405232041 is a wasteful number, since it uses less digits than its factorization.

2021405232041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155492710170.

The product of its (nonzero) digits is 3840, while the sum is 26.

The spelling of 2021405232041 in words is "two trillion, twenty-one billion, four hundred five million, two hundred thirty-two thousand, forty-one".