100211020221121 has 4 divisors (see below), whose sum is σ = 101203208540244. Its totient is φ = 99218831902000.

The previous prime is 100211020221017. The next prime is 100211020221127. The reversal of 100211020221121 is 121122020112001.

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 48417089981121 + 51793930240000 = 6958239^2 + 7196800^2 .

It is a cyclic number.

It is not a de Polignac number, because 100211020221121 - 2²¹ = 100211018123969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100211020221095 and 100211020221104.

It is not an unprimeable number, because it can be changed into a prime (100211020221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496094159410 + ... + 496094159611.

It is an arithmetic number, because the mean of its divisors is an integer number (25300802135061).

Almost surely, 2^{100211020221121} is an apocalyptic number.

It is an amenable number.

100211020221121 is a deficient number, since it is larger than the sum of its proper divisors (992188319123).

100211020221121 is an equidigital number, since it uses as much as digits as its factorization.

100211020221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992188319122.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100211020221121 its reverse (121122020112001), we get a palindrome (221333040333122).

The spelling of 100211020221121 in words is "one hundred trillion, two hundred eleven billion, twenty million, two hundred twenty-one thousand, one hundred twenty-one".