100222122122 has 4 divisors (see below), whose sum is σ = 150333183186. Its totient is φ = 50111061060.

The previous prime is 100222122109. The next prime is 100222122131. The reversal of 100222122122 is 221221222001.

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 only one way, i.e., 50113747321 + 50108374801 = 223861^2 + 223849^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100222122122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055530529 + ... + 25055530532.

Almost surely, 2^100222122122 is an apocalyptic number.

100222122122 is a deficient number, since it is larger than the sum of its proper divisors (50111061064).

100222122122 is an equidigital number, since it uses as much as digits as its factorization.

100222122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50111061063.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100222122122 its reverse (221221222001), we get a palindrome (321443344123).

The spelling of 100222122122 in words is "one hundred billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".