122424021 has 16 divisors (see below), whose sum is σ = 192038400. Its totient is φ = 76814784.

The previous prime is 122424017. The next prime is 122424023. The reversal of 122424021 is 120424221.

It is not a de Polignac number, because 122424021 - 2² = 122424017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122423985 and 122424003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122424023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132901 + ... + 133818.

It is an arithmetic number, because the mean of its divisors is an integer number (12002400).

Almost surely, 2^122424021 is an apocalyptic number.

It is an amenable number.

122424021 is a deficient number, since it is larger than the sum of its proper divisors (69614379).

122424021 is a wasteful number, since it uses less digits than its factorization.

122424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266745 (or 266739 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 122424021 is about 11064.5388968542. The cubic root of 122424021 is about 496.5414939628.

Adding to 122424021 its reverse (120424221), we get a palindrome (242848242).

The spelling of 122424021 in words is "one hundred twenty-two million, four hundred twenty-four thousand, twenty-one".