1104021221021 has 8 divisors (see below), whose sum is σ = 1105115578200. Its totient is φ = 1102927044160.

The previous prime is 1104021220873. The next prime is 1104021221027. The reversal of 1104021221021 is 1201221204011.

It can be written as a sum of positive squares in 4 ways, for example, as 50142405625 + 1053878815396 = 223925^2 + 1026586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1104021221021 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 (1104021221027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14499911 + ... + 14575851.

It is an arithmetic number, because the mean of its divisors is an integer number (138139447275).

Almost surely, 2^{1104021221021} is an apocalyptic number.

It is an amenable number.

1104021221021 is a deficient number, since it is larger than the sum of its proper divisors (1094357179).

1104021221021 is a wasteful number, since it uses less digits than its factorization.

1104021221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90159.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1104021221021 its reverse (1201221204011), we get a palindrome (2305242425032).

The spelling of 1104021221021 in words is "one trillion, one hundred four billion, twenty-one million, two hundred twenty-one thousand, twenty-one".