100222845 has 32 divisors (see below), whose sum is σ = 172744704. Its totient is φ = 49473600.

The previous prime is 100222831. The next prime is 100222849. The reversal of 100222845 is 548222001.

It is not a de Polignac number, because 100222845 - 2⁸ = 100222589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6010 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (5398272).

Almost surely, 2^100222845 is an apocalyptic number.

100222845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100222845 is a deficient number, since it is larger than the sum of its proper divisors (72521859).

100222845 is a wasteful number, since it uses less digits than its factorization.

100222845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9433.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 100222845 is about 10011.1360494202. The cubic root of 100222845 is about 464.5034125204.

Adding to 100222845 its reverse (548222001), we get a palindrome (648444846).

The spelling of 100222845 in words is "one hundred million, two hundred twenty-two thousand, eight hundred forty-five".