124206221 has 8 divisors (see below), whose sum is σ = 125129664. Its totient is φ = 123286720.

The previous prime is 124206169. The next prime is 124206223. The reversal of 124206221 is 122602421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 124206221 - 2⁶ = 124206157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124206193 and 124206202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124206223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90581 + ... + 91941.

It is an arithmetic number, because the mean of its divisors is an integer number (15641208).

Almost surely, 2^124206221 is an apocalyptic number.

It is an amenable number.

124206221 is a deficient number, since it is larger than the sum of its proper divisors (923443).

124206221 is a wasteful number, since it uses less digits than its factorization.

124206221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 124206221 is about 11144.7844752602. The cubic root of 124206221 is about 498.9393797602.

Adding to 124206221 its reverse (122602421), we get a palindrome (246808642).

The spelling of 124206221 in words is "one hundred twenty-four million, two hundred six thousand, two hundred twenty-one".