1321050099 has 8 divisors (see below), whose sum is σ = 1790275792. Its totient is φ = 866262240.

The previous prime is 1321050097. The next prime is 1321050131. The reversal of 1321050099 is 9900501231.

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

It is not a de Polignac number, because 1321050099 - 2¹ = 1321050097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321050097) 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, 3609244 + ... + 3609609.

It is an arithmetic number, because the mean of its divisors is an integer number (223784474).

Almost surely, 2^1321050099 is an apocalyptic number.

1321050099 is a deficient number, since it is larger than the sum of its proper divisors (469225693).

1321050099 is an equidigital number, since it uses as much as digits as its factorization.

1321050099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218917.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 1321050099 is about 36346.2528880213. The cubic root of 1321050099 is about 1097.2521217614.

The spelling of 1321050099 in words is "one billion, three hundred twenty-one million, fifty thousand, ninety-nine".