121002120122 has 32 divisors (see below), whose sum is σ = 205911115200. Its totient is φ = 52867047168.

The previous prime is 121002120121. The next prime is 121002120139. The reversal of 121002120122 is 221021200121.

It is a junction number, because it is equal to n+sod(n) for n = 121002120097 and 121002120106.

It is not an unprimeable number, because it can be changed into a prime (121002120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551954 + ... + 739362.

It is an arithmetic number, because the mean of its divisors is an integer number (6434722350).

Almost surely, 2^121002120122 is an apocalyptic number.

121002120122 is a deficient number, since it is larger than the sum of its proper divisors (84908995078).

121002120122 is a wasteful number, since it uses less digits than its factorization.

121002120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188750.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121002120122 its reverse (221021200121), we get a palindrome (342023320243).

The spelling of 121002120122 in words is "one hundred twenty-one billion, two million, one hundred twenty thousand, one hundred twenty-two".