124331222221 has 2 divisors, whose sum is σ = 124331222222. Its totient is φ = 124331222220.

The previous prime is 124331222159. The next prime is 124331222227. The reversal of 124331222221 is 122222133421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85477293225 + 38853928996 = 292365^2 + 197114^2 .

It is a cyclic number.

It is not a de Polignac number, because 124331222221 - 2³⁵ = 89971483853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124331222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62165611110 + 62165611111.

It is an arithmetic number, because the mean of its divisors is an integer number (62165611111).

Almost surely, 2^124331222221 is an apocalyptic number.

It is an amenable number.

124331222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

124331222221 is an equidigital number, since it uses as much as digits as its factorization.

124331222221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

Adding to 124331222221 its reverse (122222133421), we get a palindrome (246553355642).

The spelling of 124331222221 in words is "one hundred twenty-four billion, three hundred thirty-one million, two hundred twenty-two thousand, two hundred twenty-one".