1099242271 has 4 divisors (see below), whose sum is σ = 1101078000. Its totient is φ = 1097406544.

The previous prime is 1099242257. The next prime is 1099242281. The reversal of 1099242271 is 1722429901.

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 1099242271 - 2¹¹ = 1099240223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1099242271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099242241) 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, 916966 + ... + 918163.

It is an arithmetic number, because the mean of its divisors is an integer number (275269500).

Almost surely, 2^1099242271 is an apocalyptic number.

1099242271 is a deficient number, since it is larger than the sum of its proper divisors (1835729).

1099242271 is an equidigital number, since it uses as much as digits as its factorization.

1099242271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835728.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1099242271 is about 33154.8227411941. The cubic root of 1099242271 is about 1032.0430341683.

The spelling of 1099242271 in words is "one billion, ninety-nine million, two hundred forty-two thousand, two hundred seventy-one".