100221010212 has 12 divisors (see below), whose sum is σ = 233849023856. Its totient is φ = 33407003400.

The previous prime is 100221010093. The next prime is 100221010217. The reversal of 100221010212 is 212010122001.

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

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 8351750851 = 100221010212 / (1 + 0 + 0 + 2 + 2 + 1 + 0 + 1 + 0 + 2 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (100221010217) 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, 4175875414 + ... + 4175875437.

Almost surely, 2^100221010212 is an apocalyptic number.

100221010212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100221010212 is an abundant number, since it is smaller than the sum of its proper divisors (133628013644).

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

100221010212 is a wasteful number, since it uses less digits than its factorization.

100221010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351750858 (or 8351750856 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100221010212 its reverse (212010122001), we get a palindrome (312231132213).

The spelling of 100221010212 in words is "one hundred billion, two hundred twenty-one million, ten thousand, two hundred twelve".