11202120011 has 4 divisors (see below), whose sum is σ = 11204731272. Its totient is φ = 11199508752.

The previous prime is 11202119993. The next prime is 11202120049. The reversal of 11202120011 is 11002120211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11002120211 = 761 ⋅14457451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202120011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202119974 and 11202120001.

It is not an unprimeable number, because it can be changed into a prime (11202120311) 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, 1299185 + ... + 1307778.

It is an arithmetic number, because the mean of its divisors is an integer number (2801182818).

Almost surely, 2^11202120011 is an apocalyptic number.

11202120011 is a deficient number, since it is larger than the sum of its proper divisors (2611261).

11202120011 is an equidigital number, since it uses as much as digits as its factorization.

11202120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611260.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11202120011 its reverse (11002120211), we get a palindrome (22204240222).

The spelling of 11202120011 in words is "eleven billion, two hundred two million, one hundred twenty thousand, eleven".