909131128212 has 48 divisors (see below), whose sum is σ = 2233024404800. Its totient is φ = 287084943360.

The previous prime is 909131128091. The next prime is 909131128219. The reversal of 909131128212 is 212821131909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909131128219) 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 15 ways as a sum of consecutive naturals, for example, 13934964 + ... + 14000052.

Almost surely, 2^909131128212 is an apocalyptic number.

It is an amenable number.

909131128212 is an abundant number, since it is smaller than the sum of its proper divisors (1323893276588).

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

909131128212 is a wasteful number, since it uses less digits than its factorization.

909131128212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126376 (or 126374 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The spelling of 909131128212 in words is "nine hundred nine billion, one hundred thirty-one million, one hundred twenty-eight thousand, two hundred twelve".