11923212 has 48 divisors (see below), whose sum is σ = 32544512. Its totient is φ = 3326400.

The previous prime is 11923211. The next prime is 11923217. The reversal of 11923212 is 21232911.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11923211) 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, 1962 + ... + 5262.

Almost surely, 2^11923212 is an apocalyptic number.

11923212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11923212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16272256).

11923212 is an abundant number, since it is smaller than the sum of its proper divisors (20621300).

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

11923212 is a wasteful number, since it uses less digits than its factorization.

11923212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358 (or 3356 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 11923212 is about 3453.0004344048. Note that the first 3 decimals coincide. The cubic root of 11923212 is about 228.4534680772.

The spelling of 11923212 in words is "eleven million, nine hundred twenty-three thousand, two hundred twelve".