100101221221986 has 96 divisors (see below), whose sum is σ = 224646969456000. Its totient is φ = 32175988266240.

The previous prime is 100101221221919. The next prime is 100101221221999. The reversal of 100101221221986 is 689122122101001.

100101221221986 is a `hidden beast` number, since 100 + 101 + 221 + 221 + 9 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 100101221221986.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1922520325 + ... + 1922572391.

It is an arithmetic number, because the mean of its divisors is an integer number (2340072598500).

Almost surely, 2^{100101221221986} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100101221221986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112323484728000).

100101221221986 is an abundant number, since it is smaller than the sum of its proper divisors (124545748234014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100101221221986 is a wasteful number, since it uses less digits than its factorization.

100101221221986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56664 (or 56661 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

Adding to 100101221221986 its reverse (689122122101001), we get a palindrome (789223343322987).

The spelling of 100101221221986 in words is "one hundred trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, nine hundred eighty-six".