1110110001221 has 16 divisors (see below), whose sum is σ = 1250362638336. Its totient is φ = 977900242176.

The previous prime is 1110110001199. The next prime is 1110110001277. The reversal of 1110110001221 is 1221000110111.

It is not a de Polignac number, because 1110110001221 - 2³⁴ = 1092930132037 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 (1110110001421) 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 15 ways as a sum of consecutive naturals, for example, 4157765 + ... + 4416698.

It is an arithmetic number, because the mean of its divisors is an integer number (78147664896).

Almost surely, 2^{1110110001221} is an apocalyptic number.

It is an amenable number.

1110110001221 is a deficient number, since it is larger than the sum of its proper divisors (140252637115).

1110110001221 is a wasteful number, since it uses less digits than its factorization.

1110110001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8574932.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1110110001221 its reverse (1221000110111), we get a palindrome (2331110111332).

The spelling of 1110110001221 in words is "one trillion, one hundred ten billion, one hundred ten million, one thousand, two hundred twenty-one".