105221355 has 8 divisors (see below), whose sum is σ = 168354192. Its totient is φ = 56118048.

The previous prime is 105221353. The next prime is 105221357. The reversal of 105221355 is 553122501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (105221353) and next prime (105221357).

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

It is not a de Polignac number, because 105221355 - 2¹ = 105221353 is a prime.

It is a super-2 number, since 2×105221355² = 22143067096072050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105221353) 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, 3507364 + ... + 3507393.

It is an arithmetic number, because the mean of its divisors is an integer number (21044274).

Almost surely, 2^105221355 is an apocalyptic number.

105221355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105221355 is a deficient number, since it is larger than the sum of its proper divisors (63132837).

105221355 is an equidigital number, since it uses as much as digits as its factorization.

105221355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014765.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 105221355 is about 10257.7460974622. The cubic root of 105221355 is about 472.1006844365.

Adding to 105221355 its reverse (553122501), we get a palindrome (658343856).

The spelling of 105221355 in words is "one hundred five million, two hundred twenty-one thousand, three hundred fifty-five".