111100202221 has 16 divisors (see below), whose sum is σ = 121712191488. Its totient is φ = 100956844800.

The previous prime is 111100202207. The next prime is 111100202249. The reversal of 111100202221 is 122202001111.

It is a cyclic number.

It is not a de Polignac number, because 111100202221 - 2¹¹ = 111100200173 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 (111100202201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17430 + ... + 471703.

It is an arithmetic number, because the mean of its divisors is an integer number (7607011968).

Almost surely, 2^111100202221 is an apocalyptic number.

It is an amenable number.

111100202221 is a deficient number, since it is larger than the sum of its proper divisors (10611989267).

111100202221 is a wasteful number, since it uses less digits than its factorization.

111100202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489612.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111100202221 its reverse (122202001111), we get a palindrome (233302203332).

The spelling of 111100202221 in words is "one hundred eleven billion, one hundred million, two hundred two thousand, two hundred twenty-one".