1321092105 has 8 divisors (see below), whose sum is σ = 2113747392. Its totient is φ = 704582448.

The previous prime is 1321092089. The next prime is 1321092107. The reversal of 1321092105 is 5012901231.

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

It is not a de Polignac number, because 1321092105 - 2⁴ = 1321092089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321092107) 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, 44036389 + ... + 44036418.

It is an arithmetic number, because the mean of its divisors is an integer number (264218424).

Almost surely, 2^1321092105 is an apocalyptic number.

1321092105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1321092105 is a deficient number, since it is larger than the sum of its proper divisors (792655287).

1321092105 is an equidigital number, since it uses as much as digits as its factorization.

1321092105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88072815.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1321092105 is about 36346.8307421706. The cubic root of 1321092105 is about 1097.2637515712.

Adding to 1321092105 its reverse (5012901231), we get a palindrome (6333993336).

The spelling of 1321092105 in words is "one billion, three hundred twenty-one million, ninety-two thousand, one hundred five".