20112216134 has 4 divisors (see below), whose sum is σ = 30168324204. Its totient is φ = 10056108066.

The previous prime is 20112216109. The next prime is 20112216143. The reversal of 20112216134 is 43161221102.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028054032 + ... + 5028054035.

It is an arithmetic number, because the mean of its divisors is an integer number (7542081051).

Almost surely, 2^20112216134 is an apocalyptic number.

20112216134 is a deficient number, since it is larger than the sum of its proper divisors (10056108070).

20112216134 is a wasteful number, since it uses less digits than its factorization.

20112216134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056108069.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 20112216134 its reverse (43161221102), we get a palindrome (63273437236).

The spelling of 20112216134 in words is "twenty billion, one hundred twelve million, two hundred sixteen thousand, one hundred thirty-four".