11100211221201 has 4 divisors (see below), whose sum is σ = 14800281628272. Its totient is φ = 7400140814132.

The previous prime is 11100211221149. The next prime is 11100211221217. The reversal of 11100211221201 is 10212211200111.

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 11100211221201 - 2⁶ = 11100211221137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11100211221251) 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, 1850035203531 + ... + 1850035203536.

It is an arithmetic number, because the mean of its divisors is an integer number (3700070407068).

Almost surely, 2^{11100211221201} is an apocalyptic number.

It is an amenable number.

11100211221201 is a deficient number, since it is larger than the sum of its proper divisors (3700070407071).

11100211221201 is an equidigital number, since it uses as much as digits as its factorization.

11100211221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700070407070.

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

Adding to 11100211221201 its reverse (10212211200111), we get a palindrome (21312422421312).

The spelling of 11100211221201 in words is "eleven trillion, one hundred billion, two hundred eleven million, two hundred twenty-one thousand, two hundred one".