1021052065 has 32 divisors (see below), whose sum is σ = 1361048832. Its totient is φ = 729120000.

The previous prime is 1021052033. The next prime is 1021052083. The reversal of 1021052065 is 5602501201.

It is not a de Polignac number, because 1021052065 - 2⁵ = 1021052033 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1456215 + ... + 1456915.

It is an arithmetic number, because the mean of its divisors is an integer number (42532776).

Almost surely, 2^1021052065 is an apocalyptic number.

It is an amenable number.

1021052065 is a deficient number, since it is larger than the sum of its proper divisors (339996767).

1021052065 is a wasteful number, since it uses less digits than its factorization.

1021052065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1021052065 is about 31953.9053168779. The cubic root of 1021052065 is about 1006.9686796978.

Adding to 1021052065 its reverse (5602501201), we get a palindrome (6623553266).

The spelling of 1021052065 in words is "one billion, twenty-one million, fifty-two thousand, sixty-five".