122206121 has 4 divisors (see below), whose sum is σ = 122289792. Its totient is φ = 122122452.

The previous prime is 122206109. The next prime is 122206151. The reversal of 122206121 is 121602221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122206121 - 2¹⁴ = 122189737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122206121.

It is not an unprimeable number, because it can be changed into a prime (122206151) 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, 39605 + ... + 42578.

It is an arithmetic number, because the mean of its divisors is an integer number (30572448).

Almost surely, 2^122206121 is an apocalyptic number.

It is an amenable number.

122206121 is a deficient number, since it is larger than the sum of its proper divisors (83671).

122206121 is an equidigital number, since it uses as much as digits as its factorization.

122206121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83670.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 122206121 is about 11054.6877386926. The cubic root of 122206121 is about 496.2467243406.

Adding to 122206121 its reverse (121602221), we get a palindrome (243808342).

The spelling of 122206121 in words is "one hundred twenty-two million, two hundred six thousand, one hundred twenty-one".