124002510221221 has 2 divisors, whose sum is σ = 124002510221222. Its totient is φ = 124002510221220.

The previous prime is 124002510221209. The next prime is 124002510221237. The reversal of 124002510221221 is 122122015200421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119724934888321 + 4277575332900 = 10941889^2 + 2068230^2 .

It is a cyclic number.

It is not a de Polignac number, because 124002510221221 - 2³³ = 123993920286629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124002510221281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62001255110610 + 62001255110611.

It is an arithmetic number, because the mean of its divisors is an integer number (62001255110611).

Almost surely, 2^{124002510221221} is an apocalyptic number.

It is an amenable number.

124002510221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

124002510221221 is an equidigital number, since it uses as much as digits as its factorization.

124002510221221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 124002510221221 its reverse (122122015200421), we get a palindrome (246124525421642).

The spelling of 124002510221221 in words is "one hundred twenty-four trillion, two billion, five hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".