1103023401221 has 4 divisors (see below), whose sum is σ = 1260598172832. Its totient is φ = 945448629612.

The previous prime is 1103023401203. The next prime is 1103023401239. The reversal of 1103023401221 is 1221043203011.

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 an interprime number because it is at equal distance from previous prime (1103023401203) and next prime (1103023401239).

It is a cyclic number.

It is not a de Polignac number, because 1103023401221 - 2³⁸ = 828145494277 is a prime.

It is a super-2 number, since 2×1103023401221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103023401193 and 1103023401202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103023401251) 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, 78787385795 + ... + 78787385808.

It is an arithmetic number, because the mean of its divisors is an integer number (315149543208).

Almost surely, 2^{1103023401221} is an apocalyptic number.

It is an amenable number.

1103023401221 is a deficient number, since it is larger than the sum of its proper divisors (157574771611).

1103023401221 is an equidigital number, since it uses as much as digits as its factorization.

1103023401221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157574771610.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1103023401221 its reverse (1221043203011), we get a palindrome (2324066604232).

The spelling of 1103023401221 in words is "one trillion, one hundred three billion, twenty-three million, four hundred one thousand, two hundred twenty-one".