105653323221 has 4 divisors (see below), whose sum is σ = 140871097632. Its totient is φ = 70435548812.

The previous prime is 105653323213. The next prime is 105653323229. The reversal of 105653323221 is 122323356501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122323356501 = 3 ⋅40774452167.

It is an interprime number because it is at equal distance from previous prime (105653323213) and next prime (105653323229).

It is a cyclic number.

It is not a de Polignac number, because 105653323221 - 2³ = 105653323213 is a prime.

It is a super-2 number, since 2×105653323221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105653323229) 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, 17608887201 + ... + 17608887206.

It is an arithmetic number, because the mean of its divisors is an integer number (35217774408).

Almost surely, 2^105653323221 is an apocalyptic number.

It is an amenable number.

105653323221 is a deficient number, since it is larger than the sum of its proper divisors (35217774411).

105653323221 is an equidigital number, since it uses as much as digits as its factorization.

105653323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35217774410.

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 105653323221 its reverse (122323356501), we get a palindrome (227976679722).

The spelling of 105653323221 in words is "one hundred five billion, six hundred fifty-three million, three hundred twenty-three thousand, two hundred twenty-one".