100131221110105 has 8 divisors (see below), whose sum is σ = 121021907529600. Its totient is φ = 79528682089776.

The previous prime is 100131221110103. The next prime is 100131221110121. The reversal of 100131221110105 is 501011122131001.

It is a happy number.

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 100131221110105 - 2¹ = 100131221110103 is a prime.

It is a super-2 number, since 2×100131221110105² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100131221110103) 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, 72036849025 + ... + 72036850414.

It is an arithmetic number, because the mean of its divisors is an integer number (15127738441200).

Almost surely, 2^{100131221110105} is an apocalyptic number.

It is an amenable number.

100131221110105 is a deficient number, since it is larger than the sum of its proper divisors (20890686419495).

100131221110105 is a wasteful number, since it uses less digits than its factorization.

100131221110105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144073699583.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 100131221110105 its reverse (501011122131001), we get a palindrome (601142343241106).

The spelling of 100131221110105 in words is "one hundred trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred ten thousand, one hundred five".