1110400144021 has 12 divisors (see below), whose sum is σ = 1309384350732. Its totient is φ = 938733582528.

The previous prime is 1110400144003. The next prime is 1110400144037. The reversal of 1110400144021 is 1204410040111.

It can be written as a sum of positive squares in 2 ways, for example, as 373015562500 + 737384581521 = 610750^2 + 858711^2 .

It is not a de Polignac number, because 1110400144021 - 2¹¹ = 1110400141973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1110400144021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110400144001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155210310 + ... + 155217463.

It is an arithmetic number, because the mean of its divisors is an integer number (109115362561).

Almost surely, 2^{1110400144021} is an apocalyptic number.

It is an amenable number.

1110400144021 is a deficient number, since it is larger than the sum of its proper divisors (198984206711).

1110400144021 is an equidigital number, since it uses as much as digits as its factorization.

1110400144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310427860 (or 310427853 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1110400144021 its reverse (1204410040111), we get a palindrome (2314810184132).

The spelling of 1110400144021 in words is "one trillion, one hundred ten billion, four hundred million, one hundred forty-four thousand, twenty-one".