331132212012 has 96 divisors (see below), whose sum is σ = 895696994304. Its totient is φ = 93251592000.

The previous prime is 331132212001. The next prime is 331132212023. The reversal of 331132212012 is 210212231133.

It is an interprime number because it is at equal distance from previous prime (331132212001) and next prime (331132212023).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 331132212012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41642637 + ... + 41650587.

It is an arithmetic number, because the mean of its divisors is an integer number (9330177024).

Almost surely, 2^331132212012 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 331132212012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447848497152).

331132212012 is an abundant number, since it is smaller than the sum of its proper divisors (564564782292).

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

331132212012 is a wasteful number, since it uses less digits than its factorization.

331132212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15019 (or 15017 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 331132212012 its reverse (210212231133), we get a palindrome (541344443145).

The spelling of 331132212012 in words is "three hundred thirty-one billion, one hundred thirty-two million, two hundred twelve thousand, twelve".