122121112122 has 96 divisors (see below), whose sum is σ = 275816698560. Its totient is φ = 39027225600.

The previous prime is 122121112121. The next prime is 122121112159. The reversal of 122121112122 is 221211121221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 122121112095 and 122121112104.

It is not an unprimeable number, because it can be changed into a prime (122121112121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7178058 + ... + 7195050.

It is an arithmetic number, because the mean of its divisors is an integer number (2873090610).

Almost surely, 2^122121112122 is an apocalyptic number.

122121112122 is an abundant number, since it is smaller than the sum of its proper divisors (153695586438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122121112122 is a wasteful number, since it uses less digits than its factorization.

122121112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17228 (or 17225 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 122121112122 its reverse (221211121221), we get a palindrome (343332233343).

Subtracting 122121112122 from its reverse (221211121221), we obtain a palindrome (99090009099).

The spelling of 122121112122 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-two".