20413422130521 has 16 divisors (see below), whose sum is σ = 32178793507200. Its totient is φ = 11262577726848.

The previous prime is 20413422130499. The next prime is 20413422130523. The reversal of 20413422130521 is 12503122431402.

It is a happy number.

It is not a de Polignac number, because 20413422130521 - 2⁷ = 20413422130393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20413422130523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16759787676 + ... + 16759788893.

It is an arithmetic number, because the mean of its divisors is an integer number (2011174594200).

Almost surely, 2^{20413422130521} is an apocalyptic number.

20413422130521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20413422130521 is a deficient number, since it is larger than the sum of its proper divisors (11765371376679).

20413422130521 is a wasteful number, since it uses less digits than its factorization.

20413422130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33519576608.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 20413422130521 its reverse (12503122431402), we get a palindrome (32916544561923).

The spelling of 20413422130521 in words is "twenty trillion, four hundred thirteen billion, four hundred twenty-two million, one hundred thirty thousand, five hundred twenty-one".