1103401240421 has 4 divisors (see below), whose sum is σ = 1103923439052. Its totient is φ = 1102879041792.

The previous prime is 1103401240399. The next prime is 1103401240429. The reversal of 1103401240421 is 1240421043011.

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 551967273025 + 551433967396 = 742945^2 + 742586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103401240421 - 2¹⁰ = 1103401239397 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 (1103401240429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261096146 + ... + 261100371.

It is an arithmetic number, because the mean of its divisors is an integer number (275980859763).

Almost surely, 2^{1103401240421} is an apocalyptic number.

It is an amenable number.

1103401240421 is a deficient number, since it is larger than the sum of its proper divisors (522198631).

1103401240421 is an equidigital number, since it uses as much as digits as its factorization.

1103401240421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522198630.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1103401240421 its reverse (1240421043011), we get a palindrome (2343822283432).

The spelling of 1103401240421 in words is "one trillion, one hundred three billion, four hundred one million, two hundred forty thousand, four hundred twenty-one".