11211100212 has 48 divisors (see below), whose sum is σ = 28186828992. Its totient is φ = 3447690240.

The previous prime is 11211100181. The next prime is 11211100249. The reversal of 11211100212 is 21200111211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282628 + ... + 319844.

It is an arithmetic number, because the mean of its divisors is an integer number (587225604).

Almost surely, 2^11211100212 is an apocalyptic number.

11211100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211100212 is an abundant number, since it is smaller than the sum of its proper divisors (16975728780).

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

11211100212 is a wasteful number, since it uses less digits than its factorization.

11211100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39168 (or 39166 counting only the distinct ones).

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

Adding to 11211100212 its reverse (21200111211), we get a palindrome (32411211423).

The spelling of 11211100212 in words is "eleven billion, two hundred eleven million, one hundred thousand, two hundred twelve".