11321213100012 has 72 divisors (see below), whose sum is σ = 28902815847360. Its totient is φ = 3736120147200.

The previous prime is 11321213099929. The next prime is 11321213100013. The reversal of 11321213100012 is 21000131212311.

11321213100012 is a `hidden beast` number, since 1 + 1 + 321 + 21 + 310 + 0 + 0 + 12 = 666.

It is a super-2 number, since 2×11321213100012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11321213100013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57783688 + ... + 57979280.

It is an arithmetic number, because the mean of its divisors is an integer number (401427997880).

Almost surely, 2^{11321213100012} is an apocalyptic number.

11321213100012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11321213100012 is an abundant number, since it is smaller than the sum of its proper divisors (17581602747348).

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

11321213100012 is a wasteful number, since it uses less digits than its factorization.

11321213100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211623 (or 211618 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11321213100012 its reverse (21000131212311), we get a palindrome (32321344312323).

The spelling of 11321213100012 in words is "eleven trillion, three hundred twenty-one billion, two hundred thirteen million, one hundred thousand, twelve".