2152015121 has 8 divisors (see below), whose sum is σ = 2165744064. Its totient is φ = 2138328720.

The previous prime is 2152015111. The next prime is 2152015169. The reversal of 2152015121 is 1215102512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2152015121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2152015093 and 2152015102.

It is not an unprimeable number, because it can be changed into a prime (2152015111) 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, 94106 + ... + 114716.

It is an arithmetic number, because the mean of its divisors is an integer number (270718008).

Almost surely, 2^2152015121 is an apocalyptic number.

It is an amenable number.

2152015121 is a deficient number, since it is larger than the sum of its proper divisors (13728943).

2152015121 is a wasteful number, since it uses less digits than its factorization.

2152015121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21271.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 2152015121 is about 46389.8169968367. The cubic root of 2152015121 is about 1291.0659860597.

Adding to 2152015121 its reverse (1215102512), we get a palindrome (3367117633).

The spelling of 2152015121 in words is "two billion, one hundred fifty-two million, fifteen thousand, one hundred twenty-one".