121600001171 has 24 divisors (see below), whose sum is σ = 135841145088. Its totient is φ = 107946990000.

The previous prime is 121600001147. The next prime is 121600001207. The reversal of 121600001171 is 171100006121.

It is a happy number.

It is not a de Polignac number, because 121600001171 - 2¹⁰ = 121600000147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121600001141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5771426 + ... + 5792456.

It is an arithmetic number, because the mean of its divisors is an integer number (5660047712).

Almost surely, 2^121600001171 is an apocalyptic number.

121600001171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121600001171 is a deficient number, since it is larger than the sum of its proper divisors (14241143917).

121600001171 is a wasteful number, since it uses less digits than its factorization.

121600001171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21311 (or 21252 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 121600001171 its reverse (171100006121), we get a palindrome (292700007292).

The spelling of 121600001171 in words is "one hundred twenty-one billion, six hundred million, one thousand, one hundred seventy-one".