121073163721 has 8 divisors (see below), whose sum is σ = 121782767040. Its totient is φ = 120363672912.

The previous prime is 121073163709. The next prime is 121073163769. The reversal of 121073163721 is 127361370121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121073163721 - 2¹³ = 121073155529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121073173721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3223870 + ... + 3261208.

It is an arithmetic number, because the mean of its divisors is an integer number (15222845880).

Almost surely, 2^121073163721 is an apocalyptic number.

It is an amenable number.

121073163721 is a deficient number, since it is larger than the sum of its proper divisors (709603319).

121073163721 is a wasteful number, since it uses less digits than its factorization.

121073163721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56255.

The product of its (nonzero) digits is 10584, while the sum is 34.

The spelling of 121073163721 in words is "one hundred twenty-one billion, seventy-three million, one hundred sixty-three thousand, seven hundred twenty-one".