110011021201221 has 32 divisors (see below), whose sum is σ = 167695546475520. Its totient is φ = 62841055552896.

The previous prime is 110011021201117. The next prime is 110011021201229. The reversal of 110011021201221 is 122102120110011.

It is a happy number.

It is not a de Polignac number, because 110011021201221 - 2⁷ = 110011021201093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110011021201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110011021201229) 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, 688750450 + ... + 688910156.

It is an arithmetic number, because the mean of its divisors is an integer number (5240485827360).

Almost surely, 2^{110011021201221} is an apocalyptic number.

It is an amenable number.

110011021201221 is a deficient number, since it is larger than the sum of its proper divisors (57684525274299).

110011021201221 is a wasteful number, since it uses less digits than its factorization.

110011021201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171193.

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

Adding to 110011021201221 its reverse (122102120110011), we get a palindrome (232113141311232).

The spelling of 110011021201221 in words is "one hundred ten trillion, eleven billion, twenty-one million, two hundred one thousand, two hundred twenty-one".