11111221102101 has 4 divisors (see below), whose sum is σ = 14814961469472. Its totient is φ = 7407480734732.

The previous prime is 11111221102097. The next prime is 11111221102153. The reversal of 11111221102101 is 10120112211111.

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 11111221102101 - 2² = 11111221102097 is a prime.

It is a super-2 number, since 2×11111221102101² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111221102181) 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, 1851870183681 + ... + 1851870183686.

It is an arithmetic number, because the mean of its divisors is an integer number (3703740367368).

Almost surely, 2^{11111221102101} is an apocalyptic number.

It is an amenable number.

11111221102101 is a deficient number, since it is larger than the sum of its proper divisors (3703740367371).

11111221102101 is an equidigital number, since it uses as much as digits as its factorization.

11111221102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703740367370.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111221102101 its reverse (10120112211111), we get a palindrome (21231333313212).

The spelling of 11111221102101 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, one hundred two thousand, one hundred one".