11101212221101 has 4 divisors (see below), whose sum is σ = 11101222681632. Its totient is φ = 11101201760572.

The previous prime is 11101212221063. The next prime is 11101212221153. The reversal of 11101212221101 is 10112221210111.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11101212221101 - 2¹⁵ = 11101212188333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101212221201) 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, 3432391 + ... + 5829556.

It is an arithmetic number, because the mean of its divisors is an integer number (2775305670408).

Almost surely, 2^{11101212221101} is an apocalyptic number.

It is an amenable number.

11101212221101 is a deficient number, since it is larger than the sum of its proper divisors (10460531).

11101212221101 is an equidigital number, since it uses as much as digits as its factorization.

11101212221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10460530.

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

Adding to 11101212221101 its reverse (10112221210111), we get a palindrome (21213433431212).

The spelling of 11101212221101 in words is "eleven trillion, one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred one".