121121122012 has 24 divisors (see below), whose sum is σ = 231268368240. Its totient is φ = 55046213760.

The previous prime is 121121121991. The next prime is 121121122037. The reversal of 121121122012 is 210221121121.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60064 + ... + 495832.

It is an arithmetic number, because the mean of its divisors is an integer number (9636182010).

Almost surely, 2^121121122012 is an apocalyptic number.

It is an amenable number.

121121122012 is a deficient number, since it is larger than the sum of its proper divisors (110147246228).

121121122012 is a wasteful number, since it uses less digits than its factorization.

121121122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442101 (or 442099 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121121122012 its reverse (210221121121), we get a palindrome (331342243133).

The spelling of 121121122012 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, twelve".