110100011111221 has 4 divisors (see below), whose sum is σ = 110100494681100. Its totient is φ = 110099527541344.

The previous prime is 110100011111171. The next prime is 110100011111227. The reversal of 110100011111221 is 122111110001011.

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 94686425183025 + 15413585928196 = 9730695^2 + 3926014^2 .

It is a cyclic number.

It is not a de Polignac number, because 110100011111221 - 2¹⁷ = 110100010980149 is a prime.

It is a super-2 number, since 2×110100011111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110100011111227) 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 3 ways as a sum of consecutive naturals, for example, 241443256 + ... + 241898833.

It is an arithmetic number, because the mean of its divisors is an integer number (27525123670275).

Almost surely, 2^{110100011111221} is an apocalyptic number.

It is an amenable number.

110100011111221 is a deficient number, since it is larger than the sum of its proper divisors (483569879).

110100011111221 is an equidigital number, since it uses as much as digits as its factorization.

110100011111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483569878.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110100011111221 its reverse (122111110001011), we get a palindrome (232211121112232).

The spelling of 110100011111221 in words is "one hundred ten trillion, one hundred billion, eleven million, one hundred eleven thousand, two hundred twenty-one".