121122120012 has 48 divisors (see below), whose sum is σ = 296727432960. Its totient is φ = 38400005952.

The previous prime is 121122119939. The next prime is 121122120029. The reversal of 121122120012 is 210021221121.

It is a junction number, because it is equal to n+sod(n) for n = 121122119973 and 121122120000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2574088 + ... + 2620719.

It is an arithmetic number, because the mean of its divisors is an integer number (6181821520).

Almost surely, 2^121122120012 is an apocalyptic number.

121122120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121122120012 is an abundant number, since it is smaller than the sum of its proper divisors (175605312948).

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

121122120012 is a wasteful number, since it uses less digits than its factorization.

121122120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194910 (or 5194908 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121122120012 its reverse (210021221121), we get a palindrome (331143341133).

The spelling of 121122120012 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, twelve".