124221135 has 16 divisors (see below), whose sum is σ = 202505184. Its totient is φ = 65000832.

The previous prime is 124221131. The next prime is 124221179. The reversal of 124221135 is 531122421.

It is not a de Polignac number, because 124221135 - 2² = 124221131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124221131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77332 + ... + 78921.

It is an arithmetic number, because the mean of its divisors is an integer number (12656574).

Almost surely, 2^124221135 is an apocalyptic number.

124221135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

124221135 is a deficient number, since it is larger than the sum of its proper divisors (78284049).

124221135 is a wasteful number, since it uses less digits than its factorization.

124221135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156314.

The product of its digits is 480, while the sum is 21.

The square root of 124221135 is about 11145.4535573928. The cubic root of 124221135 is about 498.9593489267.

Adding to 124221135 its reverse (531122421), we get a palindrome (655343556).

The spelling of 124221135 in words is "one hundred twenty-four million, two hundred twenty-one thousand, one hundred thirty-five".