100031212212 has 24 divisors (see below), whose sum is σ = 239714437536. Its totient is φ = 32442555168.

The previous prime is 100031212093. The next prime is 100031212241. The reversal of 100031212212 is 212212130001.

It is a junction number, because it is equal to n+sod(n) for n = 100031212191 and 100031212200.

It is a congruent number.

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, 112647318 + ... + 112648205.

It is an arithmetic number, because the mean of its divisors is an integer number (9988101564).

Almost surely, 2^100031212212 is an apocalyptic number.

100031212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100031212212 is an abundant number, since it is smaller than the sum of its proper divisors (139683225324).

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

100031212212 is a wasteful number, since it uses less digits than its factorization.

100031212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225295567 (or 225295565 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 100031212212 its reverse (212212130001), we get a palindrome (312243342213).

The spelling of 100031212212 in words is "one hundred billion, thirty-one million, two hundred twelve thousand, two hundred twelve".