11011211011212 has 48 divisors (see below), whose sum is σ = 25733196720000. Its totient is φ = 3664636984960.

The previous prime is 11011211011211. The next prime is 11011211011247. The reversal of 11011211011212 is 21211011211011.

It is a junction number, because it is equal to n+sod(n) for n = 11011211011191 and 11011211011200.

It is not an unprimeable number, because it can be changed into a prime (11011211011211) 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 15 ways as a sum of consecutive naturals, for example, 272797912 + ... + 272838272.

It is an arithmetic number, because the mean of its divisors is an integer number (536108265000).

Almost surely, 2^{11011211011212} is an apocalyptic number.

11011211011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11011211011212 is an abundant number, since it is smaller than the sum of its proper divisors (14721985708788).

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

11011211011212 is a wasteful number, since it uses less digits than its factorization.

11011211011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75526 (or 75524 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11011211011212 its reverse (21211011211011), we get a palindrome (32222222222223).

It can be divided in two parts, 11011211011 and 212, that multiplied together give a palindrome (2334376734332).

The spelling of 11011211011212 in words is "eleven trillion, eleven billion, two hundred eleven million, eleven thousand, two hundred twelve".