100012194 has 12 divisors (see below), whose sum is σ = 216693126. Its totient is φ = 33337392.

The previous prime is 100012189. The next prime is 100012217. The reversal of 100012194 is 491210001.

It can be written as a sum of positive squares in only one way, i.e., 51194025 + 48818169 = 7155^2 + 6987^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5556233 = 100012194 / (1 + 0 + 0 + 0 + 1 + 2 + 1 + 9 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2778099 + ... + 2778134.

Almost surely, 2^100012194 is an apocalyptic number.

100012194 is an abundant number, since it is smaller than the sum of its proper divisors (116680932).

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

100012194 is a wasteful number, since it uses less digits than its factorization.

100012194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556241 (or 5556238 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 100012194 is about 10000.6096814144. The cubic root of 100012194 is about 464.1777491059.

Adding to 100012194 its reverse (491210001), we get a palindrome (591222195).

The spelling of 100012194 in words is "one hundred million, twelve thousand, one hundred ninety-four".