11101211220201 has 4 divisors (see below), whose sum is σ = 14801614960272. Its totient is φ = 7400807480132.

The previous prime is 11101211220199. The next prime is 11101211220221. The reversal of 11101211220201 is 10202211210111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11101211220201 - 2¹ = 11101211220199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101211220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850201870031 + ... + 1850201870036.

It is an arithmetic number, because the mean of its divisors is an integer number (3700403740068).

Almost surely, 2^{11101211220201} is an apocalyptic number.

It is an amenable number.

11101211220201 is a deficient number, since it is larger than the sum of its proper divisors (3700403740071).

11101211220201 is an equidigital number, since it uses as much as digits as its factorization.

11101211220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700403740070.

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

Adding to 11101211220201 its reverse (10202211210111), we get a palindrome (21303422430312).

The spelling of 11101211220201 in words is "eleven trillion, one hundred one billion, two hundred eleven million, two hundred twenty thousand, two hundred one".