121340422450 has 96 divisors (see below), whose sum is σ = 244523880720. Its totient is φ = 44532633600.

The previous prime is 121340422439. The next prime is 121340422457. The reversal of 121340422450 is 54224043121.

It can be written as a sum of positive squares in 24 ways, for example, as 53967471481 + 67372950969 = 232309^2 + 259563^2 .

It is not an unprimeable number, because it can be changed into a prime (121340422457) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 129498382 + ... + 129499318.

Almost surely, 2^121340422450 is an apocalyptic number.

121340422450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121340422450 is an abundant number, since it is smaller than the sum of its proper divisors (123183458270).

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

121340422450 is a wasteful number, since it uses less digits than its factorization.

121340422450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 121340422450 its reverse (54224043121), we get a palindrome (175564465571).

The spelling of 121340422450 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-two thousand, four hundred fifty".