105221413 has 4 divisors (see below), whose sum is σ = 114787008. Its totient is φ = 95655820.

The previous prime is 105221393. The next prime is 105221437. The reversal of 105221413 is 314122501.

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.

It is a cyclic number.

It is not a de Polignac number, because 105221413 - 2²⁵ = 71666981 is a prime.

It is a super-2 number, since 2×105221413² = 22143091507433138, 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 (105221453) 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, 4782781 + ... + 4782802.

It is an arithmetic number, because the mean of its divisors is an integer number (28696752).

Almost surely, 2^105221413 is an apocalyptic number.

It is an amenable number.

105221413 is a deficient number, since it is larger than the sum of its proper divisors (9565595).

105221413 is an equidigital number, since it uses as much as digits as its factorization.

105221413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565594.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 105221413 is about 10257.7489245935. The cubic root of 105221413 is about 472.1007711801.

Adding to 105221413 its reverse (314122501), we get a palindrome (419343914).

It can be divided in two parts, 10522 and 1413, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 105221413 in words is "one hundred five million, two hundred twenty-one thousand, four hundred thirteen".