100222220 has 24 divisors (see below), whose sum is σ = 240533664. Its totient is φ = 34361856.

The previous prime is 100222217. The next prime is 100222229. The reversal of 100222220 is 22222001.

It is not an unprimeable number, because it can be changed into a prime (100222229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357797 + ... + 358076.

It is an arithmetic number, because the mean of its divisors is an integer number (10022236).

Almost surely, 2^100222220 is an apocalyptic number.

100222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100222220 is an abundant number, since it is smaller than the sum of its proper divisors (140311444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100222220 is a wasteful number, since it uses less digits than its factorization.

100222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715889 (or 715887 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 100222220 is about 10011.1048341329. The cubic root of 100222220 is about 464.5024469547.

Adding to 100222220 its reverse (22222001), we get a palindrome (122444221).

The spelling of 100222220 in words is "one hundred million, two hundred twenty-two thousand, two hundred twenty".