11200020001001 has 4 divisors (see below), whose sum is σ = 12061560001092. Its totient is φ = 10338480000912.

The previous prime is 11200020000859. The next prime is 11200020001003. The reversal of 11200020001001 is 10010002000211.

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 6925976475625 + 4274043525376 = 2631725^2 + 2067376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11200020001001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11200020001001.

It is not an unprimeable number, because it can be changed into a prime (11200020001003) 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, 430770000026 + ... + 430770000051.

It is an arithmetic number, because the mean of its divisors is an integer number (3015390000273).

Almost surely, 2^{11200020001001} is an apocalyptic number.

It is an amenable number.

11200020001001 is a deficient number, since it is larger than the sum of its proper divisors (861540000091).

11200020001001 is an equidigital number, since it uses as much as digits as its factorization.

11200020001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861540000090.

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

Adding to 11200020001001 its reverse (10010002000211), we get a palindrome (21210022001212).

The spelling of 11200020001001 in words is "eleven trillion, two hundred billion, twenty million, one thousand, one".