121573810967 has 24 divisors (see below), whose sum is σ = 142555312800. Its totient is φ = 103374544896.

The previous prime is 121573810961. The next prime is 121573810997. The reversal of 121573810967 is 769018375121.

It is a happy number.

It is not a de Polignac number, because 121573810967 - 2⁶ = 121573810903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121573810961) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3377159 + ... + 3412967.

It is an arithmetic number, because the mean of its divisors is an integer number (5939804700).

Almost surely, 2^121573810967 is an apocalyptic number.

121573810967 is a deficient number, since it is larger than the sum of its proper divisors (20981501833).

121573810967 is a wasteful number, since it uses less digits than its factorization.

121573810967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36375 (or 36368 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 121573810967 in words is "one hundred twenty-one billion, five hundred seventy-three million, eight hundred ten thousand, nine hundred sixty-seven".