122210421 has 16 divisors (see below), whose sum is σ = 166561920. Its totient is φ = 79676480.

The previous prime is 122210369. The next prime is 122210423. The reversal of 122210421 is 124012221.

It is a cyclic number.

It is not a de Polignac number, because 122210421 - 2⁶ = 122210357 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 122210421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122210423) 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, 56011 + ... + 58151.

It is an arithmetic number, because the mean of its divisors is an integer number (10410120).

Almost surely, 2^122210421 is an apocalyptic number.

It is an amenable number.

122210421 is a deficient number, since it is larger than the sum of its proper divisors (44351499).

122210421 is a wasteful number, since it uses less digits than its factorization.

122210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 122210421 is about 11054.8822246101. The cubic root of 122210421 is about 496.2525446597.

Adding to 122210421 its reverse (124012221), we get a palindrome (246222642).

The spelling of 122210421 in words is "one hundred twenty-two million, two hundred ten thousand, four hundred twenty-one".