1001020002201 has 12 divisors (see below), whose sum is σ = 1445928567460. Its totient is φ = 667341689760.

The previous prime is 1001020002179. The next prime is 1001020002233. The reversal of 1001020002201 is 1022000201001.

It can be written as a sum of positive squares in 2 ways, for example, as 632182419801 + 368837582400 = 795099^2 + 607320^2 .

It is not a de Polignac number, because 1001020002201 - 2¹¹ = 1001020000153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001020002601) 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 11 ways as a sum of consecutive naturals, for example, 1182171 + ... + 1843791.

Almost surely, 2^{1001020002201} is an apocalyptic number.

It is an amenable number.

1001020002201 is a deficient number, since it is larger than the sum of its proper divisors (444908565259).

1001020002201 is a wasteful number, since it uses less digits than its factorization.

1001020002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829736 (or 829733 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1001020002201 its reverse (1022000201001), we get a palindrome (2023020203202).

The spelling of 1001020002201 in words is "one trillion, one billion, twenty million, two thousand, two hundred one".