100130120342221 has 4 divisors (see below), whose sum is σ = 101121507672444. Its totient is φ = 99138733012000.

The previous prime is 100130120342191. The next prime is 100130120342237. The reversal of 100130120342221 is 122243021031001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45950583886596 + 54179536455625 = 6778686^2 + 7360675^2 .

It is a cyclic number.

It is not a de Polignac number, because 100130120342221 - 2²⁵ = 100130086787789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100130120342192 and 100130120342201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100130120342621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495693664960 + ... + 495693665161.

It is an arithmetic number, because the mean of its divisors is an integer number (25280376918111).

Almost surely, 2^{100130120342221} is an apocalyptic number.

It is an amenable number.

100130120342221 is a deficient number, since it is larger than the sum of its proper divisors (991387330223).

100130120342221 is an equidigital number, since it uses as much as digits as its factorization.

100130120342221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991387330222.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 100130120342221 its reverse (122243021031001), we get a palindrome (222373141373222).

The spelling of 100130120342221 in words is "one hundred trillion, one hundred thirty billion, one hundred twenty million, three hundred forty-two thousand, two hundred twenty-one".