121697950068 has 60 divisors (see below), whose sum is σ = 318542331492. Its totient is φ = 40514999040.

The previous prime is 121697950043. The next prime is 121697950109. The reversal of 121697950068 is 860059796121.

121697950068 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 9 + 79 + 500 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55822567824 + 65875382244 = 236268^2 + 256662^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 121697949996 and 121697950023.

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 19 ways as a sum of consecutive naturals, for example, 22588 + ... + 493868.

Almost surely, 2^121697950068 is an apocalyptic number.

121697950068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121697950068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159271165746).

121697950068 is an abundant number, since it is smaller than the sum of its proper divisors (196844381424).

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

121697950068 is a wasteful number, since it uses less digits than its factorization.

121697950068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472094 (or 472083 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 121697950068 in words is "one hundred twenty-one billion, six hundred ninety-seven million, nine hundred fifty thousand, sixty-eight".