122424221 has 4 divisors (see below), whose sum is σ = 123636444. Its totient is φ = 121212000.

The previous prime is 122424199. The next prime is 122424241.

122424221 is nontrivially palindromic in base 10.

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 82101721 + 40322500 = 9061^2 + 6350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122424221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122424193 and 122424202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122424241) 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, 605960 + ... + 606161.

It is an arithmetic number, because the mean of its divisors is an integer number (30909111).

Almost surely, 2^122424221 is an apocalyptic number.

It is an amenable number.

122424221 is a deficient number, since it is larger than the sum of its proper divisors (1212223).

122424221 is a wasteful number, since it uses less digits than its factorization.

122424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212222.

The product of its digits is 512, while the sum is 20.

The square root of 122424221 is about 11064.5479347328. The cubic root of 122424221 is about 496.5417643570.

The spelling of 122424221 in words is "one hundred twenty-two million, four hundred twenty-four thousand, two hundred twenty-one".