124221331 has 4 divisors (see below), whose sum is σ = 133776832. Its totient is φ = 114665832.

The previous prime is 124221319. The next prime is 124221337. The reversal of 124221331 is 133122421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133122421 = 6793 ⋅19597.

It is a cyclic number.

It is not a de Polignac number, because 124221331 - 2⁵ = 124221299 is a prime.

It is a super-2 number, since 2×124221331² = 30861878150823122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124221299 and 124221308.

It is not an unprimeable number, because it can be changed into a prime (124221337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4777731 + ... + 4777756.

It is an arithmetic number, because the mean of its divisors is an integer number (33444208).

Almost surely, 2^124221331 is an apocalyptic number.

124221331 is a deficient number, since it is larger than the sum of its proper divisors (9555501).

124221331 is an equidigital number, since it uses as much as digits as its factorization.

124221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9555500.

The product of its digits is 288, while the sum is 19.

The square root of 124221331 is about 11145.4623502123. The cubic root of 124221331 is about 498.9596113511.

Adding to 124221331 its reverse (133122421), we get a palindrome (257343752).

The spelling of 124221331 in words is "one hundred twenty-four million, two hundred twenty-one thousand, three hundred thirty-one".