124980221 has 2 divisors, whose sum is σ = 124980222. Its totient is φ = 124980220.

The previous prime is 124980181. The next prime is 124980223. The reversal of 124980221 is 122089421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124322500 + 657721 = 11150^2 + 811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124980221 is a prime.

Together with 124980223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124980223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62490110 + 62490111.

It is an arithmetic number, because the mean of its divisors is an integer number (62490111).

Almost surely, 2^124980221 is an apocalyptic number.

It is an amenable number.

124980221 is a deficient number, since it is larger than the sum of its proper divisors (1).

124980221 is an equidigital number, since it uses as much as digits as its factorization.

124980221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 124980221 is about 11179.4553087349. The cubic root of 124980221 is about 499.9736266089.

The spelling of 124980221 in words is "one hundred twenty-four million, nine hundred eighty thousand, two hundred twenty-one".