121220111122 has 16 divisors (see below), whose sum is σ = 206984538432. Its totient is φ = 52704395920.

The previous prime is 121220111119. The next prime is 121220111123. The reversal of 121220111122 is 221111022121.

It is a junction number, because it is equal to n+sod(n) for n = 121220111096 and 121220111105.

It is not an unprimeable number, because it can be changed into a prime (121220111123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119782213 + ... + 119783224.

It is an arithmetic number, because the mean of its divisors is an integer number (12936533652).

Almost surely, 2^121220111122 is an apocalyptic number.

121220111122 is a deficient number, since it is larger than the sum of its proper divisors (85764427310).

121220111122 is a wasteful number, since it uses less digits than its factorization.

121220111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239565473.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121220111122 its reverse (221111022121), we get a palindrome (342331133243).

The spelling of 121220111122 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, one hundred twenty-two".