111201010202221 has 4 divisors (see below), whose sum is σ = 111206858904252. Its totient is φ = 111195161500192.

The previous prime is 111201010202203. The next prime is 111201010202309. The reversal of 111201010202221 is 122202010102111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54594572326596 + 56606437875625 = 7388814^2 + 7523725^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201010202221 - 2⁹ = 111201010201709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111201010202195 and 111201010202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201010202521) 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, 2924322496 + ... + 2924360521.

It is an arithmetic number, because the mean of its divisors is an integer number (27801714726063).

Almost surely, 2^{111201010202221} is an apocalyptic number.

It is an amenable number.

111201010202221 is a deficient number, since it is larger than the sum of its proper divisors (5848702031).

111201010202221 is an equidigital number, since it uses as much as digits as its factorization.

111201010202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848702030.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111201010202221 its reverse (122202010102111), we get a palindrome (233403020304332).

The spelling of 111201010202221 in words is "one hundred eleven trillion, two hundred one billion, ten million, two hundred two thousand, two hundred twenty-one".