121453502012 has 24 divisors (see below), whose sum is σ = 225094886016. Its totient is φ = 57219492528.

The previous prime is 121453502011. The next prime is 121453502029. The reversal of 121453502012 is 210205354121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121453502011) 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 7 ways as a sum of consecutive naturals, for example, 9845678 + ... + 9858005.

It is an arithmetic number, because the mean of its divisors is an integer number (9378953584).

Almost surely, 2^121453502012 is an apocalyptic number.

It is an amenable number.

121453502012 is a deficient number, since it is larger than the sum of its proper divisors (103641384004).

121453502012 is a wasteful number, since it uses less digits than its factorization.

121453502012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703777 (or 19703775 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 121453502012 its reverse (210205354121), we get a palindrome (331658856133).

The spelling of 121453502012 in words is "one hundred twenty-one billion, four hundred fifty-three million, five hundred two thousand, twelve".