121712001161 has 8 divisors (see below), whose sum is σ = 122113488000. Its totient is φ = 121310816400.

The previous prime is 121712001139. The next prime is 121712001179. The reversal of 121712001161 is 161100217121.

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 121712001161 - 2⁶ = 121712001097 is a prime.

It is a super-2 number, since 2×121712001161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121712001101) 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, 746330 + ... + 894668.

It is an arithmetic number, because the mean of its divisors is an integer number (15264186000).

Almost surely, 2^121712001161 is an apocalyptic number.

It is an amenable number.

121712001161 is a deficient number, since it is larger than the sum of its proper divisors (401486839).

121712001161 is a wasteful number, since it uses less digits than its factorization.

121712001161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151039.

The product of its (nonzero) digits is 168, while the sum is 23.

Adding to 121712001161 its reverse (161100217121), we get a palindrome (282812218282).

The spelling of 121712001161 in words is "one hundred twenty-one billion, seven hundred twelve million, one thousand, one hundred sixty-one".