121735216336 has 20 divisors (see below), whose sum is σ = 237165092164. Its totient is φ = 60531321600.

The previous prime is 121735216327. The next prime is 121735216363. The reversal of 121735216336 is 633612537121.

It can be written as a sum of positive squares in 2 ways, for example, as 39053664400 + 82681551936 = 197620^2 + 287544^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21014925 + ... + 21020716.

Almost surely, 2^121735216336 is an apocalyptic number.

121735216336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121735216336 is a deficient number, since it is larger than the sum of its proper divisors (115429875828).

121735216336 is a wasteful number, since it uses less digits than its factorization.

121735216336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42035830 (or 42035824 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The spelling of 121735216336 in words is "one hundred twenty-one billion, seven hundred thirty-five million, two hundred sixteen thousand, three hundred thirty-six".