100100011200021 has 32 divisors (see below), whose sum is σ = 172940306592000. Its totient is φ = 57200006394720.

The previous prime is 100100011200017. The next prime is 100100011200157. The reversal of 100100011200021 is 120002110001001.

It is a happy number.

It is not a de Polignac number, because 100100011200021 - 2² = 100100011200017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100100011199976 and 100100011200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100011200821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5404375320 + ... + 5404393841.

It is an arithmetic number, because the mean of its divisors is an integer number (5404384581000).

Almost surely, 2^{100100011200021} is an apocalyptic number.

It is an amenable number.

100100011200021 is a deficient number, since it is larger than the sum of its proper divisors (72840295391979).

100100011200021 is an equidigital number, since it uses as much as digits as its factorization.

100100011200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808769191 (or 10808769171 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100100011200021 its reverse (120002110001001), we get a palindrome (220102121201022).

The spelling of 100100011200021 in words is "one hundred trillion, one hundred billion, eleven million, two hundred thousand, twenty-one".