11211201122112 has 84 divisors (see below), whose sum is σ = 32135667341440. Its totient is φ = 3736975917312.

The previous prime is 11211201122111. The next prime is 11211201122123. The reversal of 11211201122112 is 21122110211211.

It is a happy number.

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 (11211201122111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25902939 + ... + 26332197.

Almost surely, 2^{11211201122112} is an apocalyptic number.

11211201122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211201122112 is an abundant number, since it is smaller than the sum of its proper divisors (20924466219328).

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

11211201122112 is a wasteful number, since it uses less digits than its factorization.

11211201122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474620 (or 474607 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11211201122112 its reverse (21122110211211), we get a palindrome (32333311333323).

The spelling of 11211201122112 in words is "eleven trillion, two hundred eleven billion, two hundred one million, one hundred twenty-two thousand, one hundred twelve".