124754750221 has 2 divisors, whose sum is σ = 124754750222. Its totient is φ = 124754750220.

The previous prime is 124754750167. The next prime is 124754750227. The reversal of 124754750221 is 122057457421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74017187721 + 50737562500 = 272061^2 + 225250^2 .

It is an emirp because it is prime and its reverse (122057457421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124754750221 - 2⁷ = 124754750093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124754750227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62377375110 + 62377375111.

It is an arithmetic number, because the mean of its divisors is an integer number (62377375111).

Almost surely, 2^124754750221 is an apocalyptic number.

It is an amenable number.

124754750221 is a deficient number, since it is larger than the sum of its proper divisors (1).

124754750221 is an equidigital number, since it uses as much as digits as its factorization.

124754750221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 124754750221 in words is "one hundred twenty-four billion, seven hundred fifty-four million, seven hundred fifty thousand, two hundred twenty-one".