111102201221 has 16 divisors (see below), whose sum is σ = 123268324608. Its totient is φ = 99282523200.

The previous prime is 111102201181. The next prime is 111102201269. The reversal of 111102201221 is 122102201111.

It is a cyclic number.

It is not a de Polignac number, because 111102201221 - 2⁶ = 111102201157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111102201196 and 111102201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102201271) 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 15 ways as a sum of consecutive naturals, for example, 1009895 + ... + 1114491.

It is an arithmetic number, because the mean of its divisors is an integer number (7704270288).

Almost surely, 2^111102201221 is an apocalyptic number.

111102201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111102201221 is a deficient number, since it is larger than the sum of its proper divisors (12166123387).

111102201221 is a wasteful number, since it uses less digits than its factorization.

111102201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106252.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111102201221 its reverse (122102201111), we get a palindrome (233204402332).

The spelling of 111102201221 in words is "one hundred eleven billion, one hundred two million, two hundred one thousand, two hundred twenty-one".