100101021212221 has 16 divisors (see below), whose sum is σ = 100350128491200. Its totient is φ = 99852215299200.

The previous prime is 100101021212219. The next prime is 100101021212251. The reversal of 100101021212221 is 122212120101001.

It is a cyclic number.

It is not a de Polignac number, because 100101021212221 - 2¹ = 100101021212219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100101021212195 and 100101021212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101021212251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7641876130 + ... + 7641889228.

It is an arithmetic number, because the mean of its divisors is an integer number (6271883030700).

Almost surely, 2^{100101021212221} is an apocalyptic number.

It is an amenable number.

100101021212221 is a deficient number, since it is larger than the sum of its proper divisors (249107278979).

100101021212221 is a wasteful number, since it uses less digits than its factorization.

100101021212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23196.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100101021212221 its reverse (122212120101001), we get a palindrome (222313141313222).

The spelling of 100101021212221 in words is "one hundred trillion, one hundred one billion, twenty-one million, two hundred twelve thousand, two hundred twenty-one".