105212263 has 4 divisors (see below), whose sum is σ = 113305528. Its totient is φ = 97119000.

The previous prime is 105212249. The next prime is 105212299. The reversal of 105212263 is 362212501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362212501 = 7 ⋅51744643.

It is a cyclic number.

It is not a de Polignac number, because 105212263 - 2⁵ = 105212231 is a prime.

It is a super-2 number, since 2×105212263² = 22139240571162338, which 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 (105212363) 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, 4046613 + ... + 4046638.

It is an arithmetic number, because the mean of its divisors is an integer number (28326382).

Almost surely, 2^105212263 is an apocalyptic number.

105212263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

105212263 is a deficient number, since it is larger than the sum of its proper divisors (8093265).

105212263 is an equidigital number, since it uses as much as digits as its factorization.

105212263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093264.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 105212263 is about 10257.3029106096. The cubic root of 105212263 is about 472.0870862366.

Adding to 105212263 its reverse (362212501), we get a palindrome (467424764).

The spelling of 105212263 in words is "one hundred five million, two hundred twelve thousand, two hundred sixty-three".