11221200020011 has 4 divisors (see below), whose sum is σ = 11247980927400. Its totient is φ = 11194419112624.

The previous prime is 11221200019979. The next prime is 11221200020081. The reversal of 11221200020011 is 11002000212211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221200020011 - 2⁵ = 11221200019979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221200019973 and 11221200020000.

It is not an unprimeable number, because it can be changed into a prime (11221200020081) 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, 13390453066 + ... + 13390453903.

It is an arithmetic number, because the mean of its divisors is an integer number (2811995231850).

Almost surely, 2^{11221200020011} is an apocalyptic number.

11221200020011 is a deficient number, since it is larger than the sum of its proper divisors (26780907389).

11221200020011 is an equidigital number, since it uses as much as digits as its factorization.

11221200020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780907388.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11221200020011 its reverse (11002000212211), we get a palindrome (22223200232222).

The spelling of 11221200020011 in words is "eleven trillion, two hundred twenty-one billion, two hundred million, twenty thousand, eleven".