11331131323212 has 18 divisors (see below), whose sum is σ = 28642581955988. Its totient is φ = 3777043774392.

The previous prime is 11331131323207. The next prime is 11331131323217. The reversal of 11331131323212 is 21232313113311.

11331131323212 is a `hidden beast` number, since 1 + 1 + 3 + 311 + 3 + 1 + 323 + 21 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (11331131323207) and next prime (11331131323217).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×11331131323212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11331131323217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157376823898 + ... + 157376823969.

Almost surely, 2^{11331131323212} is an apocalyptic number.

11331131323212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11331131323212 is an abundant number, since it is smaller than the sum of its proper divisors (17311450632776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11331131323212 is a wasteful number, since it uses less digits than its factorization.

11331131323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314753647877 (or 314753647872 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

Adding to 11331131323212 its reverse (21232313113311), we get a palindrome (32563444436523).

The spelling of 11331131323212 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred twelve".