121122540012 has 48 divisors (see below), whose sum is σ = 283370250240. Its totient is φ = 40266995328.

The previous prime is 121122540001. The next prime is 121122540017. The reversal of 121122540012 is 210045221121.

It is not an unprimeable number, because it can be changed into a prime (121122540017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12313048 + ... + 12322880.

It is an arithmetic number, because the mean of its divisors is an integer number (5903546880).

Almost surely, 2^121122540012 is an apocalyptic number.

121122540012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121122540012 is an abundant number, since it is smaller than the sum of its proper divisors (162247710228).

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

121122540012 is a wasteful number, since it uses less digits than its factorization.

121122540012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12462 (or 12460 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 121122540012 its reverse (210045221121), we get a palindrome (331167761133).

The spelling of 121122540012 in words is "one hundred twenty-one billion, one hundred twenty-two million, five hundred forty thousand, twelve".