121336000653 has 32 divisors (see below), whose sum is σ = 190489469184. Its totient is φ = 67247995392.

The previous prime is 121336000637. The next prime is 121336000673. The reversal of 121336000653 is 356000633121.

It is a happy number.

121336000653 is a nontrivial binomial coefficient, being equal to C(492618, 2).

It is not a de Polignac number, because 121336000653 - 2⁴ = 121336000637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121336000653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121336000673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1 + ... + 492617.

It is an arithmetic number, because the mean of its divisors is an integer number (5952795912).

Almost surely, 2^121336000653 is an apocalyptic number.

121336000653 is the 492617-th triangular number and also the 246309-th hexagonal number.

It is an amenable number.

121336000653 is a deficient number, since it is larger than the sum of its proper divisors (69153468531).

121336000653 is a wasteful number, since it uses less digits than its factorization.

121336000653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492981.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 121336000653 its reverse (356000633121), we get a palindrome (477336633774).

The spelling of 121336000653 in words is "one hundred twenty-one billion, three hundred thirty-six million, six hundred fifty-three", and thus it is an aban number.