1065021001 has 4 divisors (see below), whose sum is σ = 1161841104. Its totient is φ = 968200900.

The previous prime is 1065020989. The next prime is 1065021011. The reversal of 1065021001 is 1001205601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1001205601 = 11 ⋅91018691.

It is a cyclic number.

It is not a de Polignac number, because 1065021001 - 2¹⁷ = 1064889929 is a prime.

It is a super-2 number, since 2×1065021001² = 2268539465142084002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065021011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48410035 + ... + 48410056.

It is an arithmetic number, because the mean of its divisors is an integer number (290460276).

Almost surely, 2^1065021001 is an apocalyptic number.

1065021001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1065021001 is a deficient number, since it is larger than the sum of its proper divisors (96820103).

1065021001 is an equidigital number, since it uses as much as digits as its factorization.

1065021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96820102.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1065021001 is about 32634.6595048884. The cubic root of 1065021001 is about 1021.2201855996.

Adding to 1065021001 its reverse (1001205601), we get a palindrome (2066226602).

The spelling of 1065021001 in words is "one billion, sixty-five million, twenty-one thousand, one".