11211992 has 32 divisors (see below), whose sum is σ = 23474880. Its totient is φ = 4976160.

The previous prime is 11211989. The next prime is 11212001. The reversal of 11211992 is 29911211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303 + ... + 5265.

It is an arithmetic number, because the mean of its divisors is an integer number (733590).

Almost surely, 2^11211992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11211992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11737440).

11211992 is an abundant number, since it is smaller than the sum of its proper divisors (12262888).

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

11211992 is a wasteful number, since it uses less digits than its factorization.

11211992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023 (or 3019 counting only the distinct ones).

The product of its digits is 324, while the sum is 26.

The square root of 11211992 is about 3348.4312744926. The cubic root of 11211992 is about 223.8176130154.

It can be divided in two parts, 112119 and 92, that added together give a palindrome (112211).

The spelling of 11211992 in words is "eleven million, two hundred eleven thousand, nine hundred ninety-two".