10001001020201 has 4 divisors (see below), whose sum is σ = 10001028527952. Its totient is φ = 10000973512452.

The previous prime is 10001001020177. The next prime is 10001001020207. The reversal of 10001001020201 is 10202010010001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001001020201 is a prime.

It is a super-2 number, since 2×10001001020201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10001001020207) 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, 13201115 + ... + 13938128.

It is an arithmetic number, because the mean of its divisors is an integer number (2500257131988).

Almost surely, 2^{10001001020201} is an apocalyptic number.

It is an amenable number.

10001001020201 is a deficient number, since it is larger than the sum of its proper divisors (27507751).

10001001020201 is an equidigital number, since it uses as much as digits as its factorization.

10001001020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27507750.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10001001020201 its reverse (10202010010001), we get a palindrome (20203011030202).

The spelling of 10001001020201 in words is "ten trillion, one billion, one million, twenty thousand, two hundred one".