1021302001 has 4 divisors (see below), whose sum is σ = 1031414004. Its totient is φ = 1011190000.

The previous prime is 1021301993. The next prime is 1021302017. The reversal of 1021302001 is 1002031201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 989039601 + 32262400 = 31449^2 + 5680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021302001 - 2³ = 1021301993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021300001) 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, 5055850 + ... + 5056051.

It is an arithmetic number, because the mean of its divisors is an integer number (257853501).

Almost surely, 2^1021302001 is an apocalyptic number.

It is an amenable number.

1021302001 is a deficient number, since it is larger than the sum of its proper divisors (10112003).

1021302001 is a wasteful number, since it uses less digits than its factorization.

1021302001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112002.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1021302001 is about 31957.8159610446. The cubic root of 1021302001 is about 1007.0508358711.

Adding to 1021302001 its reverse (1002031201), we get a palindrome (2023333202).

The spelling of 1021302001 in words is "one billion, twenty-one million, three hundred two thousand, one".