100221012221 has 8 divisors (see below), whose sum is σ = 110560464000. Its totient is φ = 90086302240.

The previous prime is 100221012211. The next prime is 100221012239. The reversal of 100221012221 is 122210122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-100221012221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100221012196 and 100221012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221012211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51184421 + ... + 51186378.

It is an arithmetic number, because the mean of its divisors is an integer number (13820058000).

Almost surely, 2^100221012221 is an apocalyptic number.

100221012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100221012221 is a deficient number, since it is larger than the sum of its proper divisors (10339451779).

100221012221 is a wasteful number, since it uses less digits than its factorization.

100221012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102370899.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100221012221 its reverse (122210122001), we get a palindrome (222431134222).

The spelling of 100221012221 in words is "one hundred billion, two hundred twenty-one million, twelve thousand, two hundred twenty-one".