1000202001 has 8 divisors (see below), whose sum is σ = 1334301024. Its totient is φ = 666452160.

The previous prime is 1000201999. The next prime is 1000202003. The reversal of 1000202001 is 1002020001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1000201999) and next prime (1000202003).

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

It is not a de Polignac number, because 1000202001 - 2¹ = 1000201999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000202003) 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, 80536 + ... + 92121.

It is an arithmetic number, because the mean of its divisors is an integer number (166787628).

Almost surely, 2^1000202001 is an apocalyptic number.

It is an amenable number.

1000202001 is a deficient number, since it is larger than the sum of its proper divisors (334099023).

1000202001 is a wasteful number, since it uses less digits than its factorization.

1000202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174591.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1000202001 is about 31625.9703566547. The cubic root of 1000202001 is about 1000.0673291334.

Adding to 1000202001 its reverse (1002020001), we get a palindrome (2002222002).

The spelling of 1000202001 in words is "one billion, two hundred two thousand, one".