20121125150 has 48 divisors (see below), whose sum is σ = 43815008160. Its totient is φ = 6730406400.

The previous prime is 20121125147. The next prime is 20121125197. The reversal of 20121125150 is 5152112102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 686735 + ... + 715434.

It is an arithmetic number, because the mean of its divisors is an integer number (912812670).

Almost surely, 2^20121125150 is an apocalyptic number.

20121125150 is an abundant number, since it is smaller than the sum of its proper divisors (23693883010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121125150 is a wasteful number, since it uses less digits than its factorization.

20121125150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402229 (or 1402224 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 20121125150 its reverse (5152112102), we get a palindrome (25273237252).

The spelling of 20121125150 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-five thousand, one hundred fifty".