100224391 has 2 divisors, whose sum is σ = 100224392. Its totient is φ = 100224390.

The previous prime is 100224389. The next prime is 100224497. The reversal of 100224391 is 193422001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100224391 - 2¹ = 100224389 is a prime.

Together with 100224389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100224361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50112195 + 50112196.

It is an arithmetic number, because the mean of its divisors is an integer number (50112196).

Almost surely, 2^100224391 is an apocalyptic number.

100224391 is a deficient number, since it is larger than the sum of its proper divisors (1).

100224391 is an equidigital number, since it uses as much as digits as its factorization.

100224391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 100224391 is about 10011.2132631365. The cubic root of 100224391 is about 464.5058009266.

Adding to 100224391 its reverse (193422001), we get a palindrome (293646392).

The spelling of 100224391 in words is "one hundred million, two hundred twenty-four thousand, three hundred ninety-one".