100011110221221 has 8 divisors (see below), whose sum is σ = 133399573176000. Its totient is φ = 66648360373632.

The previous prime is 100011110221151. The next prime is 100011110221283. The reversal of 100011110221221 is 122122011110001.

It is a happy number.

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

It is not a de Polignac number, because 100011110221221 - 2⁹ = 100011110220709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100011110221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011110621221) 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, 6428267721 + ... + 6428283278.

It is an arithmetic number, because the mean of its divisors is an integer number (16674946647000).

Almost surely, 2^{100011110221221} is an apocalyptic number.

It is an amenable number.

100011110221221 is a deficient number, since it is larger than the sum of its proper divisors (33388462954779).

100011110221221 is a wasteful number, since it uses less digits than its factorization.

100011110221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856553595.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100011110221221 its reverse (122122011110001), we get a palindrome (222133121331222).

The spelling of 100011110221221 in words is "one hundred trillion, eleven billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".