100101212221 has 8 divisors (see below), whose sum is σ = 103325479488. Its totient is φ = 96914220000.

The previous prime is 100101212213. The next prime is 100101212227. The reversal of 100101212221 is 122212101001.

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

It is a cyclic number.

It is not a de Polignac number, because 100101212221 - 2³ = 100101212213 is a prime.

It is a super-3 number, since 3×100101212221³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101212227) 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, 9313305 + ... + 9324046.

It is an arithmetic number, because the mean of its divisors is an integer number (12915684936).

Almost surely, 2^100101212221 is an apocalyptic number.

It is an amenable number.

100101212221 is a deficient number, since it is larger than the sum of its proper divisors (3224267267).

100101212221 is a wasteful number, since it uses less digits than its factorization.

100101212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18637523.

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

Adding to 100101212221 its reverse (122212101001), we get a palindrome (222313313222).

The spelling of 100101212221 in words is "one hundred billion, one hundred one million, two hundred twelve thousand, two hundred twenty-one".