111221102101 has 4 divisors (see below), whose sum is σ = 111255316704. Its totient is φ = 111186887500.

The previous prime is 111221102059. The next prime is 111221102117. The reversal of 111221102101 is 101201122111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101201122111 = 17 ⋅5953007183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111221102101 is a prime.

It is a super-2 number, since 2×111221102101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221102401) 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, 17102425 + ... + 17108926.

It is an arithmetic number, because the mean of its divisors is an integer number (27813829176).

Almost surely, 2^111221102101 is an apocalyptic number.

It is an amenable number.

111221102101 is a deficient number, since it is larger than the sum of its proper divisors (34214603).

111221102101 is an equidigital number, since it uses as much as digits as its factorization.

111221102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34214602.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111221102101 its reverse (101201122111), we get a palindrome (212422224212).

The spelling of 111221102101 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred two thousand, one hundred one".