2196071521 has 8 divisors (see below), whose sum is σ = 2510236800. Its totient is φ = 1882016448.

The previous prime is 2196071497. The next prime is 2196071567. The reversal of 2196071521 is 1251706912.

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 2196071521 - 2²¹ = 2193974369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2196071221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20820 + ... + 69466.

It is an arithmetic number, because the mean of its divisors is an integer number (313779600).

Almost surely, 2^2196071521 is an apocalyptic number.

It is an amenable number.

2196071521 is a deficient number, since it is larger than the sum of its proper divisors (314165279).

2196071521 is an equidigital number, since it uses as much as digits as its factorization.

2196071521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55103.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 2196071521 is about 46862.2611597008. The cubic root of 2196071521 is about 1299.8168422433.

The spelling of 2196071521 in words is "two billion, one hundred ninety-six million, seventy-one thousand, five hundred twenty-one".