100221012012 has 24 divisors (see below), whose sum is σ = 255108030912. Its totient is φ = 30370003600.

The previous prime is 100221011993. The next prime is 100221012079. The reversal of 100221012012 is 210210122001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379624914 + ... + 379625177.

It is an arithmetic number, because the mean of its divisors is an integer number (10629501288).

Almost surely, 2^100221012012 is an apocalyptic number.

100221012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100221012012 is an abundant number, since it is smaller than the sum of its proper divisors (154887018900).

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

100221012012 is a wasteful number, since it uses less digits than its factorization.

100221012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759250109 (or 759250107 counting only the distinct ones).

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

Adding to 100221012012 its reverse (210210122001), we get a palindrome (310431134013).

The spelling of 100221012012 in words is "one hundred billion, two hundred twenty-one million, twelve thousand, twelve".