1021232005 has 16 divisors (see below), whose sum is σ = 1271597040. Its totient is φ = 786696192.

The previous prime is 1021231997. The next prime is 1021232029. The reversal of 1021232005 is 5002321201.

1021232005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 173889 + 1021058116 = 417^2 + 31954^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021232005 - 2³ = 1021231997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021232005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10510 + ... + 46399.

It is an arithmetic number, because the mean of its divisors is an integer number (79474815).

Almost surely, 2^1021232005 is an apocalyptic number.

It is an amenable number.

1021232005 is a deficient number, since it is larger than the sum of its proper divisors (250365035).

1021232005 is an equidigital number, since it uses as much as digits as its factorization.

1021232005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57048.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1021232005 is about 31956.7208111220. The cubic root of 1021232005 is about 1007.0278289183.

Adding to 1021232005 its reverse (5002321201), we get a palindrome (6023553206).

The spelling of 1021232005 in words is "one billion, twenty-one million, two hundred thirty-two thousand, five".