124120221 has 8 divisors (see below), whose sum is σ = 167760960. Its totient is φ = 81613152.

The previous prime is 124120169. The next prime is 124120267. The reversal of 124120221 is 122021421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 124120221 - 2⁷ = 124120093 is a prime.

It is a super-2 number, since 2×124120221² = 30811658522177682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 124120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124120721) 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 7 ways as a sum of consecutive naturals, for example, 283161 + ... + 283598.

It is an arithmetic number, because the mean of its divisors is an integer number (20970120).

Almost surely, 2^124120221 is an apocalyptic number.

It is an amenable number.

124120221 is a deficient number, since it is larger than the sum of its proper divisors (43640739).

124120221 is an equidigital number, since it uses as much as digits as its factorization.

124120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566835.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 124120221 is about 11140.9255001548. The cubic root of 124120221 is about 498.8241984823.

Adding to 124120221 its reverse (122021421), we get a palindrome (246141642).

The spelling of 124120221 in words is "one hundred twenty-four million, one hundred twenty thousand, two hundred twenty-one".