124010221 has 2 divisors, whose sum is σ = 124010222. Its totient is φ = 124010220.

The previous prime is 124010209. The next prime is 124010231. The reversal of 124010221 is 122010421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122988100 + 1022121 = 11090^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 124010221 - 2¹⁵ = 123977453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124010231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62005110 + 62005111.

It is an arithmetic number, because the mean of its divisors is an integer number (62005111).

Almost surely, 2^124010221 is an apocalyptic number.

It is an amenable number.

124010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

124010221 is an equidigital number, since it uses as much as digits as its factorization.

124010221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 124010221 is about 11135.9876526512. The cubic root of 124010221 is about 498.6767960181.

Adding to 124010221 its reverse (122010421), we get a palindrome (246020642).

The spelling of 124010221 in words is "one hundred twenty-four million, ten thousand, two hundred twenty-one".