11211121021201 has 16 divisors (see below), whose sum is σ = 11410810790400. Its totient is φ = 11012978515968.

The previous prime is 11211121021141. The next prime is 11211121021253. The reversal of 11211121021201 is 10212012111211.

It is a cyclic number.

It is not a de Polignac number, because 11211121021201 - 2⁹ = 11211121020689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211121021301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16705141 + ... + 17363293.

It is an arithmetic number, because the mean of its divisors is an integer number (713175674400).

Almost surely, 2^{11211121021201} is an apocalyptic number.

It is an amenable number.

11211121021201 is a deficient number, since it is larger than the sum of its proper divisors (199689769199).

11211121021201 is an equidigital number, since it uses as much as digits as its factorization.

11211121021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659328.

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

Adding to 11211121021201 its reverse (10212012111211), we get a palindrome (21423133132412).

The spelling of 11211121021201 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-one million, twenty-one thousand, two hundred one".