100012221220212 has 216 divisors, whose sum is σ = 295395370670400. Its totient is φ = 28519320624480.

The previous prime is 100012221220157. The next prime is 100012221220231. The reversal of 100012221220212 is 212022122210001.

It is a happy number.

100012221220212 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 12 + 221 + 220 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3377521287 + ... + 3377550897.

Almost surely, 2^{100012221220212} is an apocalyptic number.

100012221220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100012221220212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147697685335200).

100012221220212 is an abundant number, since it is smaller than the sum of its proper divisors (195383149450188).

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

100012221220212 is an equidigital number, since it uses as much as digits as its factorization.

100012221220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30688 (or 30146 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100012221220212 its reverse (212022122210001), we get a palindrome (312034343430213).

The spelling of 100012221220212 in words is "one hundred trillion, twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twelve".