100122242221 has 4 divisors (see below), whose sum is σ = 100166882112. Its totient is φ = 100077602332.

The previous prime is 100122242197. The next prime is 100122242251. The reversal of 100122242221 is 122242221001.

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 100122242221 - 2⁵ = 100122242189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122242251) 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, 22316581 + ... + 22321066.

It is an arithmetic number, because the mean of its divisors is an integer number (25041720528).

Almost surely, 2^100122242221 is an apocalyptic number.

It is an amenable number.

100122242221 is a deficient number, since it is larger than the sum of its proper divisors (44639891).

100122242221 is an equidigital number, since it uses as much as digits as its factorization.

100122242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44639890.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 100122242221 its reverse (122242221001), we get a palindrome (222364463222).

The spelling of 100122242221 in words is "one hundred billion, one hundred twenty-two million, two hundred forty-two thousand, two hundred twenty-one".