100440212 has 6 divisors (see below), whose sum is σ = 175770378. Its totient is φ = 50220104.

The previous prime is 100440203. The next prime is 100440229. The reversal of 100440212 is 212044001.

It can be written as a sum of positive squares in only one way, i.e., 59043856 + 41396356 = 7684^2 + 6434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12555023 + ... + 12555030.

It is an arithmetic number, because the mean of its divisors is an integer number (29295063).

Almost surely, 2^100440212 is an apocalyptic number.

It is an amenable number.

100440212 is a deficient number, since it is larger than the sum of its proper divisors (75330166).

100440212 is a wasteful number, since it uses less digits than its factorization.

100440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25110057 (or 25110055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 100440212 is about 10021.9864298451. The cubic root of 100440212 is about 464.8389807465.

Adding to 100440212 its reverse (212044001), we get a palindrome (312484213).

The spelling of 100440212 in words is "one hundred million, four hundred forty thousand, two hundred twelve".