105213235 has 4 divisors (see below), whose sum is σ = 126255888. Its totient is φ = 84170584.

The previous prime is 105213223. The next prime is 105213239. The reversal of 105213235 is 532312501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105213235 - 2¹¹ = 105211187 is a prime.

It is a super-2 number, since 2×105213235² = 22139649638330450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105213239) 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, 10521319 + ... + 10521328.

It is an arithmetic number, because the mean of its divisors is an integer number (31563972).

Almost surely, 2^105213235 is an apocalyptic number.

105213235 is a deficient number, since it is larger than the sum of its proper divisors (21042653).

105213235 is an equidigital number, since it uses as much as digits as its factorization.

105213235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042652.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 105213235 is about 10257.3502913764. The cubic root of 105213235 is about 472.0885400190.

Adding to 105213235 its reverse (532312501), we get a palindrome (637525736).

The spelling of 105213235 in words is "one hundred five million, two hundred thirteen thousand, two hundred thirty-five".