111110020201221 has 32 divisors (see below), whose sum is σ = 148872253390848. Its totient is φ = 73711493779200.

The previous prime is 111110020201207. The next prime is 111110020201307. The reversal of 111110020201221 is 122102020011111.

It is a happy number.

It is not a de Polignac number, because 111110020201221 - 2⁷ = 111110020201093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111110020201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110020201421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7539520365 + ... + 7539535101.

It is an arithmetic number, because the mean of its divisors is an integer number (4652257918464).

Almost surely, 2^{111110020201221} is an apocalyptic number.

It is an amenable number.

111110020201221 is a deficient number, since it is larger than the sum of its proper divisors (37762233189627).

111110020201221 is a wasteful number, since it uses less digits than its factorization.

111110020201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29641.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111110020201221 its reverse (122102020011111), we get a palindrome (233212040212332).

The spelling of 111110020201221 in words is "one hundred eleven trillion, one hundred ten billion, twenty million, two hundred one thousand, two hundred twenty-one".