1103400321321 has 4 divisors (see below), whose sum is σ = 1471200428432. Its totient is φ = 735600214212.

The previous prime is 1103400321293. The next prime is 1103400321341. The reversal of 1103400321321 is 1231230043011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1103400321321 - 2⁷ = 1103400321193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103400321341) 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, 183900053551 + ... + 183900053556.

It is an arithmetic number, because the mean of its divisors is an integer number (367800107108).

Almost surely, 2^{1103400321321} is an apocalyptic number.

It is an amenable number.

1103400321321 is a deficient number, since it is larger than the sum of its proper divisors (367800107111).

1103400321321 is an equidigital number, since it uses as much as digits as its factorization.

1103400321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367800107110.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1103400321321 its reverse (1231230043011), we get a palindrome (2334630364332).

The spelling of 1103400321321 in words is "one trillion, one hundred three billion, four hundred million, three hundred twenty-one thousand, three hundred twenty-one".