10201111002001 has 4 divisors (see below), whose sum is σ = 10201919407600. Its totient is φ = 10200302596404.

The previous prime is 10201111001999. The next prime is 10201111002011. The reversal of 10201111002001 is 10020011110201.

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 not a de Polignac number, because 10201111002001 - 2¹ = 10201111001999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10201111002011) 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, 404183871 + ... + 404209108.

It is an arithmetic number, because the mean of its divisors is an integer number (2550479851900).

Almost surely, 2^{10201111002001} is an apocalyptic number.

It is an amenable number.

10201111002001 is a deficient number, since it is larger than the sum of its proper divisors (808405599).

10201111002001 is an equidigital number, since it uses as much as digits as its factorization.

10201111002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808405598.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10201111002001 its reverse (10020011110201), we get a palindrome (20221122112202).

The spelling of 10201111002001 in words is "ten trillion, two hundred one billion, one hundred eleven million, two thousand, one".