100122222021001 has 4 divisors (see below), whose sum is σ = 100122242602500. Its totient is φ = 100122201439504.

The previous prime is 100122222020929. The next prime is 100122222021067. The reversal of 100122222021001 is 100120222221001.

It is a happy number.

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 42695455998976 + 57426766022025 = 6534176^2 + 7578045^2 .

It is a cyclic number.

It is not a de Polignac number, because 100122222021001 - 2¹⁵ = 100122221988233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100122222028001) 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, 1539975 + ... + 14234323.

It is an arithmetic number, because the mean of its divisors is an integer number (25030560650625).

Almost surely, 2^{100122222021001} is an apocalyptic number.

It is an amenable number.

100122222021001 is a deficient number, since it is larger than the sum of its proper divisors (20581499).

100122222021001 is an equidigital number, since it uses as much as digits as its factorization.

100122222021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20581498.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100122222021001 its reverse (100120222221001), we get a palindrome (200242444242002).

The spelling of 100122222021001 in words is "one hundred trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, one".