11211001221201 has 8 divisors (see below), whose sum is σ = 14948018659200. Its totient is φ = 7473992298672.

The previous prime is 11211001221193. The next prime is 11211001221229. The reversal of 11211001221201 is 10212210011211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11211001221201 - 2³ = 11211001221193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211001220201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2201331 + ... + 5221863.

It is an arithmetic number, because the mean of its divisors is an integer number (1868502332400).

Almost surely, 2^{11211001221201} is an apocalyptic number.

It is an amenable number.

11211001221201 is a deficient number, since it is larger than the sum of its proper divisors (3737017437999).

11211001221201 is a wasteful number, since it uses less digits than its factorization.

11211001221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257735.

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

Adding to 11211001221201 its reverse (10212210011211), we get a palindrome (21423211232412).

The spelling of 11211001221201 in words is "eleven trillion, two hundred eleven billion, one million, two hundred twenty-one thousand, two hundred one".