11000203011001 has 4 divisors (see below), whose sum is σ = 11647273776372. Its totient is φ = 10353132245632.

The previous prime is 11000203010963. The next prime is 11000203011053. The reversal of 11000203011001 is 10011030200011.

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 7802189697600 + 3198013313401 = 2793240^2 + 1788299^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000203011001 - 2¹⁷ = 11000202879929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000203011601) 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, 323535382660 + ... + 323535382693.

It is an arithmetic number, because the mean of its divisors is an integer number (2911818444093).

Almost surely, 2^{11000203011001} is an apocalyptic number.

It is an amenable number.

11000203011001 is a deficient number, since it is larger than the sum of its proper divisors (647070765371).

11000203011001 is an equidigital number, since it uses as much as digits as its factorization.

11000203011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647070765370.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11000203011001 its reverse (10011030200011), we get a palindrome (21011233211012).

The spelling of 11000203011001 in words is "eleven trillion, two hundred three million, eleven thousand, one".