11312322121 has 8 divisors (see below), whose sum is σ = 11978979840. Its totient is φ = 10645800768.

The previous prime is 11312322103. The next prime is 11312322149. The reversal of 11312322121 is 12122321311.

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 11312322121 - 2⁹ = 11312321609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312322221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172540 + ... + 228898.

It is an arithmetic number, because the mean of its divisors is an integer number (1497372480).

Almost surely, 2^11312322121 is an apocalyptic number.

It is an amenable number.

11312322121 is a deficient number, since it is larger than the sum of its proper divisors (666657719).

11312322121 is a wasteful number, since it uses less digits than its factorization.

11312322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68183.

The product of its digits is 144, while the sum is 19.

Adding to 11312322121 its reverse (12122321311), we get a palindrome (23434643432).

The spelling of 11312322121 in words is "eleven billion, three hundred twelve million, three hundred twenty-two thousand, one hundred twenty-one".