100444213 has 2 divisors, whose sum is σ = 100444214. Its totient is φ = 100444212.

The previous prime is 100444207. The next prime is 100444249. The reversal of 100444213 is 312444001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98545329 + 1898884 = 9927^2 + 1378^2 .

It is an emirp because it is prime and its reverse (312444001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100444213 - 2²¹ = 98347061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100444283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50222106 + 50222107.

It is an arithmetic number, because the mean of its divisors is an integer number (50222107).

Almost surely, 2^100444213 is an apocalyptic number.

It is an amenable number.

100444213 is a deficient number, since it is larger than the sum of its proper divisors (1).

100444213 is an equidigital number, since it uses as much as digits as its factorization.

100444213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 100444213 is about 10022.1860389837. The cubic root of 100444213 is about 464.8451528962.

Adding to 100444213 its reverse (312444001), we get a palindrome (412888214).

The spelling of 100444213 in words is "one hundred million, four hundred forty-four thousand, two hundred thirteen".