100224121 has 2 divisors, whose sum is σ = 100224122. Its totient is φ = 100224120.

The previous prime is 100224119. The next prime is 100224127. The reversal of 100224121 is 121422001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84732025 + 15492096 = 9205^2 + 3936^2 .

It is a cyclic number.

It is not a de Polignac number, because 100224121 - 2¹ = 100224119 is a prime.

Together with 100224119, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100224127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50112060 + 50112061.

It is an arithmetic number, because the mean of its divisors is an integer number (50112061).

Almost surely, 2^100224121 is an apocalyptic number.

It is an amenable number.

100224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

100224121 is an equidigital number, since it uses as much as digits as its factorization.

100224121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 100224121 is about 10011.1997782484. The cubic root of 100224121 is about 464.5053838070.

Adding to 100224121 its reverse (121422001), we get a palindrome (221646122).

The spelling of 100224121 in words is "one hundred million, two hundred twenty-four thousand, one hundred twenty-one".