20005216211135 has 16 divisors (see below), whose sum is σ = 24244217829792. Its totient is φ = 15845537616000.

The previous prime is 20005216211119. The next prime is 20005216211153. The reversal of 20005216211135 is 53111261250002.

It is not a de Polignac number, because 20005216211135 - 2⁴ = 20005216211119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20005216211098 and 20005216211107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61822832 + ... + 62145578.

It is an arithmetic number, because the mean of its divisors is an integer number (1515263614362).

Almost surely, 2^{20005216211135} is an apocalyptic number.

20005216211135 is a deficient number, since it is larger than the sum of its proper divisors (4239001618657).

20005216211135 is a wasteful number, since it uses less digits than its factorization.

20005216211135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445594.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 20005216211135 its reverse (53111261250002), we get a palindrome (73116477461137).

The spelling of 20005216211135 in words is "twenty trillion, five billion, two hundred sixteen million, two hundred eleven thousand, one hundred thirty-five".