122312121 has 16 divisors (see below), whose sum is σ = 167811648. Its totient is φ = 79185600.

The previous prime is 122312089. The next prime is 122312123. The reversal of 122312121 is 121213221.

It is not a de Polignac number, because 122312121 - 2⁵ = 122312089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122312121.

It is not an unprimeable number, because it can be changed into a prime (122312123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103866 + ... + 105036.

It is an arithmetic number, because the mean of its divisors is an integer number (10488228).

Almost surely, 2^122312121 is an apocalyptic number.

It is an amenable number.

122312121 is a deficient number, since it is larger than the sum of its proper divisors (45499527).

122312121 is a wasteful number, since it uses less digits than its factorization.

122312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its digits is 48, while the sum is 15.

The square root of 122312121 is about 11059.4810456911. The cubic root of 122312121 is about 496.3901621948.

Adding to 122312121 its reverse (121213221), we get a palindrome (243525342).

The spelling of 122312121 in words is "one hundred twenty-two million, three hundred twelve thousand, one hundred twenty-one".