100120122001021 has 4 divisors (see below), whose sum is σ = 100160837791200. Its totient is φ = 100079406210844.

The previous prime is 100120122000991. The next prime is 100120122001069. The reversal of 100120122001021 is 120100221021001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100120122001021 - 2¹³ = 100120121992829 is a prime.

It is a super-3 number, since 3×100120122001021³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100120122000992 and 100120122001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120122001091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20357891401 + ... + 20357896318.

It is an arithmetic number, because the mean of its divisors is an integer number (25040209447800).

Almost surely, 2^{100120122001021} is an apocalyptic number.

It is an amenable number.

100120122001021 is a deficient number, since it is larger than the sum of its proper divisors (40715790179).

100120122001021 is an equidigital number, since it uses as much as digits as its factorization.

100120122001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40715790178.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100120122001021 its reverse (120100221021001), we get a palindrome (220220343022022).

The spelling of 100120122001021 in words is "one hundred trillion, one hundred twenty billion, one hundred twenty-two million, one thousand, twenty-one".