2121065662 has 16 divisors (see below), whose sum is σ = 3254795280. Its totient is φ = 1036400832.

The previous prime is 2121065659. The next prime is 2121065689. The reversal of 2121065662 is 2665601212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50728 + ... + 82555.

It is an arithmetic number, because the mean of its divisors is an integer number (203424705).

Almost surely, 2^2121065662 is an apocalyptic number.

2121065662 is a deficient number, since it is larger than the sum of its proper divisors (1133729618).

2121065662 is a wasteful number, since it uses less digits than its factorization.

2121065662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133467.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2121065662 is about 46055.0286288045. The cubic root of 2121065662 is about 1284.8468705777.

Adding to 2121065662 its reverse (2665601212), we get a palindrome (4786666874).

The spelling of 2121065662 in words is "two billion, one hundred twenty-one million, sixty-five thousand, six hundred sixty-two".