100134220 has 12 divisors (see below), whose sum is σ = 210281904. Its totient is φ = 40053680.

The previous prime is 100134217. The next prime is 100134227. The reversal of 100134220 is 22431001.

It is a self number, because there is not a number n which added to its sum of digits gives 100134220.

It is not an unprimeable number, because it can be changed into a prime (100134227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2503336 + ... + 2503375.

It is an arithmetic number, because the mean of its divisors is an integer number (17523492).

Almost surely, 2^100134220 is an apocalyptic number.

100134220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100134220 is an abundant number, since it is smaller than the sum of its proper divisors (110147684).

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

100134220 is a wasteful number, since it uses less digits than its factorization.

100134220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006720 (or 5006718 counting only the distinct ones).

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

The square root of 100134220 is about 10006.7087496339. The cubic root of 100134220 is about 464.3664552057.

Adding to 100134220 its reverse (22431001), we get a palindrome (122565221).

The spelling of 100134220 in words is "one hundred million, one hundred thirty-four thousand, two hundred twenty".