125211120112 has 160 divisors (see below), whose sum is σ = 275888592000. Its totient is φ = 54618279936.

The previous prime is 125211120091. The next prime is 125211120131. The reversal of 125211120112 is 211021112521.

It is a self number, because there is not a number n which added to its sum of digits gives 125211120112.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 191747178 + ... + 191747830.

It is an arithmetic number, because the mean of its divisors is an integer number (1724303700).

Almost surely, 2^125211120112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125211120112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137944296000).

125211120112 is an abundant number, since it is smaller than the sum of its proper divisors (150677471888).

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

125211120112 is a wasteful number, since it uses less digits than its factorization.

125211120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 125211120112 its reverse (211021112521), we get a palindrome (336232232633).

The spelling of 125211120112 in words is "one hundred twenty-five billion, two hundred eleven million, one hundred twenty thousand, one hundred twelve".