11131221002112 has 48 divisors (see below), whose sum is σ = 32031247939080. Its totient is φ = 3710407000320.

The previous prime is 11131221002039. The next prime is 11131221002117. The reversal of 11131221002112 is 21120012213111.

It is a happy number.

11131221002112 is a `hidden beast` number, since 111 + 312 + 210 + 0 + 21 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131221002117) 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, 4831257964 + ... + 4831260267.

Almost surely, 2^{11131221002112} is an apocalyptic number.

11131221002112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11131221002112 is an abundant number, since it is smaller than the sum of its proper divisors (20900026936968).

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

11131221002112 is an equidigital number, since it uses as much as digits as its factorization.

11131221002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662518251 (or 9662518236 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11131221002112 its reverse (21120012213111), we get a palindrome (32251233215223).

The spelling of 11131221002112 in words is "eleven trillion, one hundred thirty-one billion, two hundred twenty-one million, two thousand, one hundred twelve".