2116571021601 has 8 divisors (see below), whose sum is σ = 2822102038560. Its totient is φ = 1411043676192.

The previous prime is 2116571021503. The next prime is 2116571021611. The reversal of 2116571021601 is 1061201756112.

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

It is not a de Polignac number, because 2116571021601 - 2¹¹ = 2116571019553 is a prime.

It is a super-2 number, since 2×2116571021601² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2116571021611) 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, 999285 + ... + 2287293.

It is an arithmetic number, because the mean of its divisors is an integer number (352762754820).

Almost surely, 2^{2116571021601} is an apocalyptic number.

It is an amenable number.

2116571021601 is a deficient number, since it is larger than the sum of its proper divisors (705531016959).

2116571021601 is a wasteful number, since it uses less digits than its factorization.

2116571021601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835775.

The product of its (nonzero) digits is 5040, while the sum is 33.

Adding to 2116571021601 its reverse (1061201756112), we get a palindrome (3177772777713).

The spelling of 2116571021601 in words is "two trillion, one hundred sixteen billion, five hundred seventy-one million, twenty-one thousand, six hundred one".