11211312012 has 48 divisors (see below), whose sum is σ = 26341459200. Its totient is φ = 3711200320.

The previous prime is 11211312001. The next prime is 11211312023. The reversal of 11211312012 is 21021311211.

11211312012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11211312001) and next prime (11211312023).

It is a junction number, because it is equal to n+sod(n) for n = 11211311982 and 11211312000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1799062 + ... + 1805282.

It is an arithmetic number, because the mean of its divisors is an integer number (548780400).

Almost surely, 2^11211312012 is an apocalyptic number.

11211312012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211312012 is an abundant number, since it is smaller than the sum of its proper divisors (15130147188).

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

11211312012 is a wasteful number, since it uses less digits than its factorization.

11211312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7246 (or 7244 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11211312012 its reverse (21021311211), we get a palindrome (32232623223).

The spelling of 11211312012 in words is "eleven billion, two hundred eleven million, three hundred twelve thousand, twelve".