11212120122012 has 72 divisors (see below), whose sum is σ = 28453900980960. Its totient is φ = 3722590623360.

The previous prime is 11212120121981. The next prime is 11212120122013. The reversal of 11212120122012 is 21022102121211.

11212120122012 is a `hidden beast` number, since 112 + 121 + 201 + 220 + 12 = 666.

11212120122012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (11212120122013) 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, 41049937 + ... + 41322167.

It is an arithmetic number, because the mean of its divisors is an integer number (395193069180).

Almost surely, 2^{11212120122012} is an apocalyptic number.

11212120122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11212120122012 is an abundant number, since it is smaller than the sum of its proper divisors (17241780858948).

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

11212120122012 is a wasteful number, since it uses less digits than its factorization.

11212120122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276763 (or 276758 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212120122012 its reverse (21022102121211), we get a palindrome (32234222243223).

The spelling of 11212120122012 in words is "eleven trillion, two hundred twelve billion, one hundred twenty million, one hundred twenty-two thousand, twelve".