20205021411 has 12 divisors (see below), whose sum is σ = 29252438488. Its totient is φ = 13438903104.

The previous prime is 20205021391. The next prime is 20205021443. The reversal of 20205021411 is 11412050202.

20205021411 is a `hidden beast` number, since 2 + 0 + 20 + 502 + 141 + 1 = 666.

It is not a de Polignac number, because 20205021411 - 2⁷ = 20205021283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20205121411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2588485 + ... + 2596278.

Almost surely, 2^20205021411 is an apocalyptic number.

20205021411 is a deficient number, since it is larger than the sum of its proper divisors (9047417077).

20205021411 is a wasteful number, since it uses less digits than its factorization.

20205021411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185202 (or 5185199 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 20205021411 its reverse (11412050202), we get a palindrome (31617071613).

The spelling of 20205021411 in words is "twenty billion, two hundred five million, twenty-one thousand, four hundred eleven".