121123539516996 has 135 divisors (see below), whose sum is σ = 323546109675789. Its totient is φ = 39512443427712.

The previous prime is 121123539516989. The next prime is 121123539517031. The reversal of 121123539516996 is 699615935321121.

The square root of 121123539516996 is 11005614.

It is a perfect power (a square), and thus also a powerful number.

121123539516996 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 2 + 3 + 539 + 5 + 1 + 6 + 9 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24151464963396 + 96972074553600 = 4914414^2 + 9847440^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 9310742940 + ... + 9310755948.

Almost surely, 2^{121123539516996} is an apocalyptic number.

121123539516996 is the 11005614-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121123539516996

121123539516996 is an abundant number, since it is smaller than the sum of its proper divisors (202422570158793).

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

121123539516996 is an frugal number, since it uses more digits than its factorization.

121123539516996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26128 (or 13061 counting only the distinct ones).

The product of its digits is 23619600, while the sum is 63.

The spelling of 121123539516996 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, five hundred thirty-nine million, five hundred sixteen thousand, nine hundred ninety-six".