11012321331 has 16 divisors (see below), whose sum is σ = 17797691520. Its totient is φ = 6674133960.

The previous prime is 11012321329. The next prime is 11012321377. The reversal of 11012321331 is 13312321011.

11012321331 is a `hidden beast` number, since 1 + 1 + 0 + 12 + 321 + 331 = 666.

It is not a de Polignac number, because 11012321331 - 2¹ = 11012321329 is a prime.

It is a super-2 number, since 2×11012321331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11012321311) 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 15 ways as a sum of consecutive naturals, for example, 18538965 + ... + 18539558.

It is an arithmetic number, because the mean of its divisors is an integer number (1112355720).

Almost surely, 2^11012321331 is an apocalyptic number.

11012321331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11012321331 is a deficient number, since it is larger than the sum of its proper divisors (6785370189).

11012321331 is a wasteful number, since it uses less digits than its factorization.

11012321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37078543 (or 37078537 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11012321331 its reverse (13312321011), we get a palindrome (24324642342).

The spelling of 11012321331 in words is "eleven billion, twelve million, three hundred twenty-one thousand, three hundred thirty-one".