11201221211001 has 16 divisors (see below), whose sum is σ = 15927254884800. Its totient is φ = 6977654512128.

The previous prime is 11201221210957. The next prime is 11201221211003. The reversal of 11201221211001 is 10011212210211.

It is a happy number.

It is not a de Polignac number, because 11201221211001 - 2¹⁰ = 11201221209977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11201221211003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790035316 + ... + 790049493.

It is an arithmetic number, because the mean of its divisors is an integer number (995453430300).

Almost surely, 2^{11201221211001} is an apocalyptic number.

It is an amenable number.

11201221211001 is a deficient number, since it is larger than the sum of its proper divisors (4726033673799).

11201221211001 is a wasteful number, since it uses less digits than its factorization.

11201221211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580084968.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11201221211001 its reverse (10011212210211), we get a palindrome (21212433421212).

The spelling of 11201221211001 in words is "eleven trillion, two hundred one billion, two hundred twenty-one million, two hundred eleven thousand, one".