100221121012 has 48 divisors (see below), whose sum is σ = 186636441600. Its totient is φ = 46987270880.

The previous prime is 100221120959. The next prime is 100221121057. The reversal of 100221121012 is 210121122001.

It is a junction number, because it is equal to n+sod(n) for n = 100221120983 and 100221121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1922937 + ... + 1974367.

It is an arithmetic number, because the mean of its divisors is an integer number (3888259200).

Almost surely, 2^100221121012 is an apocalyptic number.

It is an amenable number.

100221121012 is a deficient number, since it is larger than the sum of its proper divisors (86415320588).

100221121012 is a wasteful number, since it uses less digits than its factorization.

100221121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51876 (or 51874 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100221121012 its reverse (210121122001), we get a palindrome (310342243013).

The spelling of 100221121012 in words is "one hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, twelve".