11312221465 has 8 divisors (see below), whose sum is σ = 13588481088. Its totient is φ = 9040566960.

The previous prime is 11312221457. The next prime is 11312221471. The reversal of 11312221465 is 56412221311.

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

It is not a de Polignac number, because 11312221465 - 2³ = 11312221457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1145871 + ... + 1155700.

It is an arithmetic number, because the mean of its divisors is an integer number (1698560136).

Almost surely, 2^11312221465 is an apocalyptic number.

It is an amenable number.

11312221465 is a deficient number, since it is larger than the sum of its proper divisors (2276259623).

11312221465 is an equidigital number, since it uses as much as digits as its factorization.

11312221465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302559.

The product of its digits is 2880, while the sum is 28.

Adding to 11312221465 its reverse (56412221311), we get a palindrome (67724442776).

The spelling of 11312221465 in words is "eleven billion, three hundred twelve million, two hundred twenty-one thousand, four hundred sixty-five".