20125512243112 has 16 divisors (see below), whose sum is σ = 37871564107860. Its totient is φ = 10026428481024.

The previous prime is 20125512243079. The next prime is 20125512243119. The reversal of 20125512243112 is 21134221552102.

It can be written as a sum of positive squares in 2 ways, for example, as 18031454351716 + 2094057891396 = 4246346^2 + 1447086^2 .

It is not an unprimeable number, because it can be changed into a prime (20125512243119) 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 3 ways as a sum of consecutive naturals, for example, 4540952713 + ... + 4540957144.

Almost surely, 2^{20125512243112} is an apocalyptic number.

It is an amenable number.

20125512243112 is a deficient number, since it is larger than the sum of its proper divisors (17746051864748).

20125512243112 is a wasteful number, since it uses less digits than its factorization.

20125512243112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9081910140 (or 9081910136 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 20125512243112 its reverse (21134221552102), we get a palindrome (41259733795214).

The spelling of 20125512243112 in words is "twenty trillion, one hundred twenty-five billion, five hundred twelve million, two hundred forty-three thousand, one hundred twelve".