100331231212 has 24 divisors (see below), whose sum is σ = 189531266400. Its totient is φ = 46329862656.

The previous prime is 100331231201. The next prime is 100331231233. The reversal of 100331231212 is 212132133001.

It is a self number, because there is not a number n which added to its sum of digits gives 100331231212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18800037 + ... + 18805372.

It is an arithmetic number, because the mean of its divisors is an integer number (7897136100).

Almost surely, 2^100331231212 is an apocalyptic number.

It is an amenable number.

100331231212 is a deficient number, since it is larger than the sum of its proper divisors (89200035188).

100331231212 is a wasteful number, since it uses less digits than its factorization.

100331231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37605465 (or 37605463 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 100331231212 its reverse (212132133001), we get a palindrome (312463364213).

The spelling of 100331231212 in words is "one hundred billion, three hundred thirty-one million, two hundred thirty-one thousand, two hundred twelve".