122231221 has 4 divisors (see below), whose sum is σ = 139692832. Its totient is φ = 104769612.

The previous prime is 122231189. The next prime is 122231279. The reversal of 122231221 is 122132221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122132221 = 8527 ⋅14323.

It is a cyclic number.

It is not a de Polignac number, because 122231221 - 2⁵ = 122231189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122231195 and 122231204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122231281) 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, 8730795 + ... + 8730808.

It is an arithmetic number, because the mean of its divisors is an integer number (34923208).

Almost surely, 2^122231221 is an apocalyptic number.

It is an amenable number.

122231221 is a deficient number, since it is larger than the sum of its proper divisors (17461611).

122231221 is an equidigital number, since it uses as much as digits as its factorization.

122231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17461610.

The product of its digits is 96, while the sum is 16.

The square root of 122231221 is about 11055.8229453985. The cubic root of 122231221 is about 496.2806968345.

Adding to 122231221 its reverse (122132221), we get a palindrome (244363442).

The spelling of 122231221 in words is "one hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-one".