100012213212 has 12 divisors (see below), whose sum is σ = 233361830856. Its totient is φ = 33337404400.

The previous prime is 100012213211. The next prime is 100012213247. The reversal of 100012213212 is 212312210001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×100012213212³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100012213191 and 100012213200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012213211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4167175539 + ... + 4167175562.

It is an arithmetic number, because the mean of its divisors is an integer number (19446819238).

Almost surely, 2^100012213212 is an apocalyptic number.

100012213212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100012213212 is an abundant number, since it is smaller than the sum of its proper divisors (133349617644).

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

100012213212 is a wasteful number, since it uses less digits than its factorization.

100012213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8334351108 (or 8334351106 counting only the distinct ones).

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

Adding to 100012213212 its reverse (212312210001), we get a palindrome (312324423213).

The spelling of 100012213212 in words is "one hundred billion, twelve million, two hundred thirteen thousand, two hundred twelve".