105404502221 has 8 divisors (see below), whose sum is σ = 105597166584. Its totient is φ = 105211906560.

The previous prime is 105404502157. The next prime is 105404502271. The reversal of 105404502221 is 122205404501.

It can be written as a sum of positive squares in 4 ways, for example, as 40308592900 + 65095909321 = 200770^2 + 255139^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 105404502221 - 2⁶ = 105404502157 is a prime.

It is a super-2 number, since 2×105404502221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105404502271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3821801 + ... + 3849281.

It is an arithmetic number, because the mean of its divisors is an integer number (13199645823).

Almost surely, 2^105404502221 is an apocalyptic number.

It is an amenable number.

105404502221 is a deficient number, since it is larger than the sum of its proper divisors (192664363).

105404502221 is an equidigital number, since it uses as much as digits as its factorization.

105404502221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34351.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 105404502221 its reverse (122205404501), we get a palindrome (227609906722).

The spelling of 105404502221 in words is "one hundred five billion, four hundred four million, five hundred two thousand, two hundred twenty-one".