11211102012 has 48 divisors (see below), whose sum is σ = 29457921024. Its totient is φ = 3287712000.

The previous prime is 11211102011. The next prime is 11211102017. The reversal of 11211102012 is 21020111211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211102011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1365789 + ... + 1373972.

It is an arithmetic number, because the mean of its divisors is an integer number (613706688).

Almost surely, 2^11211102012 is an apocalyptic number.

11211102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211102012 is an abundant number, since it is smaller than the sum of its proper divisors (18246819012).

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

11211102012 is a wasteful number, since it uses less digits than its factorization.

11211102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739810 (or 2739808 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11211102012 its reverse (21020111211), we get a palindrome (32231213223).

The spelling of 11211102012 in words is "eleven billion, two hundred eleven million, one hundred two thousand, twelve".