105342530221 has 8 divisors (see below), whose sum is σ = 105830695800. Its totient is φ = 104854609920.

The previous prime is 105342530219. The next prime is 105342530261. The reversal of 105342530221 is 122035243501.

It can be written as a sum of positive squares in 4 ways, for example, as 47225374596 + 58117155625 = 217314^2 + 241075^2 .

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 105342530221 - 2¹ = 105342530219 is a prime.

It is a super-2 number, since 2×105342530221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105342530221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105342530261) 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, 829485 + ... + 948013.

It is an arithmetic number, because the mean of its divisors is an integer number (13228836975).

Almost surely, 2^105342530221 is an apocalyptic number.

It is an amenable number.

105342530221 is a deficient number, since it is larger than the sum of its proper divisors (488165579).

105342530221 is a wasteful number, since it uses less digits than its factorization.

105342530221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122639.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 105342530221 its reverse (122035243501), we get a palindrome (227377773722).

The spelling of 105342530221 in words is "one hundred five billion, three hundred forty-two million, five hundred thirty thousand, two hundred twenty-one".