124052221 has 4 divisors (see below), whose sum is σ = 124166812. Its totient is φ = 123937632.

The previous prime is 124052219. The next prime is 124052237. The reversal of 124052221 is 122250421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64160100 + 59892121 = 8010^2 + 7739^2 .

It is a cyclic number.

It is not a de Polignac number, because 124052221 - 2¹ = 124052219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124052021) 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 in 3 ways as a sum of consecutive naturals, for example, 55656 + ... + 57841.

It is an arithmetic number, because the mean of its divisors is an integer number (31041703).

Almost surely, 2^124052221 is an apocalyptic number.

It is an amenable number.

124052221 is a deficient number, since it is larger than the sum of its proper divisors (114591).

124052221 is a wasteful number, since it uses less digits than its factorization.

124052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114590.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 124052221 is about 11137.8732709616. The cubic root of 124052221 is about 498.7330872421.

The spelling of 124052221 in words is "one hundred twenty-four million, fifty-two thousand, two hundred twenty-one".