20112451522 has 16 divisors (see below), whose sum is σ = 31494807360. Its totient is φ = 9614583792.

The previous prime is 20112451487. The next prime is 20112451523. The reversal of 20112451522 is 22515421102.

It is not an unprimeable number, because it can be changed into a prime (20112451523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104 + ... + 200572.

It is an arithmetic number, because the mean of its divisors is an integer number (1968425460).

Almost surely, 2^20112451522 is an apocalyptic number.

20112451522 is a deficient number, since it is larger than the sum of its proper divisors (11382355838).

20112451522 is a wasteful number, since it uses less digits than its factorization.

20112451522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200697.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 20112451522 its reverse (22515421102), we get a palindrome (42627872624).

The spelling of 20112451522 in words is "twenty billion, one hundred twelve million, four hundred fifty-one thousand, five hundred twenty-two".