11121397609 has 8 divisors (see below), whose sum is σ = 12712515840. Its totient is φ = 9530866176.

The previous prime is 11121397577. The next prime is 11121397663. The reversal of 11121397609 is 90679312111.

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

It is a cyclic number.

It is not a de Polignac number, because 11121397609 - 2⁵ = 11121397577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121392609) 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, 105304 + ... + 182569.

It is an arithmetic number, because the mean of its divisors is an integer number (1589064480).

Almost surely, 2^11121397609 is an apocalyptic number.

It is an amenable number.

11121397609 is a deficient number, since it is larger than the sum of its proper divisors (1591118231).

11121397609 is an equidigital number, since it uses as much as digits as its factorization.

11121397609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293399.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 11121397609 in words is "eleven billion, one hundred twenty-one million, three hundred ninety-seven thousand, six hundred nine".