121220120111122 has 48 divisors (see below), whose sum is σ = 195997139396352. Its totient is φ = 56195427672000.

The previous prime is 121220120111117. The next prime is 121220120111137. The reversal of 121220120111122 is 221111021022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121220120111122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 738016318 + ... + 738180550.

It is an arithmetic number, because the mean of its divisors is an integer number (4083273737424).

Almost surely, 2^{121220120111122} is an apocalyptic number.

121220120111122 is a deficient number, since it is larger than the sum of its proper divisors (74777019285230).

121220120111122 is a wasteful number, since it uses less digits than its factorization.

121220120111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186071 (or 186052 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121220120111122 its reverse (221111021022121), we get a palindrome (342331141133243).

The spelling of 121220120111122 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred twenty million, one hundred eleven thousand, one hundred twenty-two".