1065150021 has 8 divisors (see below), whose sum is σ = 1529446240. Its totient is φ = 655476912.

The previous prime is 1065150017. The next prime is 1065150139. The reversal of 1065150021 is 1200515601.

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

It is not a de Polignac number, because 1065150021 - 2² = 1065150017 is a prime.

It is a super-2 number, since 2×1065150021² = 2269089134472600882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1065150021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065152021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13655731 + ... + 13655808.

It is an arithmetic number, because the mean of its divisors is an integer number (191180780).

Almost surely, 2^1065150021 is an apocalyptic number.

It is an amenable number.

1065150021 is a deficient number, since it is larger than the sum of its proper divisors (464296219).

1065150021 is a wasteful number, since it uses less digits than its factorization.

1065150021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27311555.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1065150021 is about 32636.6361777681. The cubic root of 1065150021 is about 1021.2614218782.

Adding to 1065150021 its reverse (1200515601), we get a palindrome (2265665622).

The spelling of 1065150021 in words is "one billion, sixty-five million, one hundred fifty thousand, twenty-one".