1104042231221 has 4 divisors (see below), whose sum is σ = 1104163683744. Its totient is φ = 1103920778700.

The previous prime is 1104042231217. The next prime is 1104042231263. The reversal of 1104042231221 is 1221322404011.

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 a cyclic number.

It is not a de Polignac number, because 1104042231221 - 2² = 1104042231217 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 (1104042231521) 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, 60712625 + ... + 60730806.

It is an arithmetic number, because the mean of its divisors is an integer number (276040920936).

Almost surely, 2^{1104042231221} is an apocalyptic number.

It is an amenable number.

1104042231221 is a deficient number, since it is larger than the sum of its proper divisors (121452523).

1104042231221 is an equidigital number, since it uses as much as digits as its factorization.

1104042231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121452522.

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

Adding to 1104042231221 its reverse (1221322404011), we get a palindrome (2325364635232).

The spelling of 1104042231221 in words is "one trillion, one hundred four billion, forty-two million, two hundred thirty-one thousand, two hundred twenty-one".