20121134522 has 8 divisors (see below), whose sum is σ = 30228352416. Its totient is φ = 10045017052.

The previous prime is 20121134521. The next prime is 20121134549. The reversal of 20121134522 is 22543112102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20121134521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7773488 + ... + 7776075.

It is an arithmetic number, because the mean of its divisors is an integer number (3778544052).

Almost surely, 2^20121134522 is an apocalyptic number.

20121134522 is a deficient number, since it is larger than the sum of its proper divisors (10107217894).

20121134522 is a wasteful number, since it uses less digits than its factorization.

20121134522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15550212.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20121134522 its reverse (22543112102), we get a palindrome (42664246624).

The spelling of 20121134522 in words is "twenty billion, one hundred twenty-one million, one hundred thirty-four thousand, five hundred twenty-two".