100222312 has 8 divisors (see below), whose sum is σ = 187916850. Its totient is φ = 50111152.

The previous prime is 100222301. The next prime is 100222319. The reversal of 100222312 is 213222001.

It can be written as a sum of positive squares in only one way, i.e., 70997476 + 29224836 = 8426^2 + 5406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 100222292 and 100222301.

It is not an unprimeable number, because it can be changed into a prime (100222319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6263887 + ... + 6263902.

Almost surely, 2^100222312 is an apocalyptic number.

It is an amenable number.

100222312 is a deficient number, since it is larger than the sum of its proper divisors (87694538).

100222312 is a wasteful number, since it uses less digits than its factorization.

100222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12527795 (or 12527791 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 100222312 is about 10011.1094290293. The cubic root of 100222312 is about 464.5025890862.

Adding to 100222312 its reverse (213222001), we get a palindrome (313444313).

The spelling of 100222312 in words is "one hundred million, two hundred twenty-two thousand, three hundred twelve".