100220122 has 4 divisors (see below), whose sum is σ = 150330186. Its totient is φ = 50110060.

The previous prime is 100220119. The next prime is 100220129. The reversal of 100220122 is 221022001.

It is a Cunningham number, because it is equal to 10011²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221022001 = 1429 ⋅154669.

It can be written as a sum of positive squares in only one way, i.e., 100220121 + 1 = 10011^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100220099 and 100220108.

It is not an unprimeable number, because it can be changed into a prime (100220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055029 + ... + 25055032.

Almost surely, 2^100220122 is an apocalyptic number.

100220122 is a deficient number, since it is larger than the sum of its proper divisors (50110064).

100220122 is an equidigital number, since it uses as much as digits as its factorization.

100220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50110063.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 100220122 is about 10011.0000499451. Note that the first 4 decimals coincide. The cubic root of 100220122 is about 464.4992057142.

Adding to 100220122 its reverse (221022001), we get a palindrome (321242123).

The spelling of 100220122 in words is "one hundred million, two hundred twenty thousand, one hundred twenty-two".