224161212 has 72 divisors (see below), whose sum is σ = 578083968. Its totient is φ = 67554080.

The previous prime is 224161177. The next prime is 224161219. The reversal of 224161212 is 212161422.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224161219) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 381583 + ... + 382169.

It is an arithmetic number, because the mean of its divisors is an integer number (8028944).

Almost surely, 2^224161212 is an apocalyptic number.

224161212 is a gapful number since it is divisible by the number (22) 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 224161212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289041984).

224161212 is an abundant number, since it is smaller than the sum of its proper divisors (353922756).

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

224161212 is a wasteful number, since it uses less digits than its factorization.

224161212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 866 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 224161212 is about 14972.0142933408. The cubic root of 224161212 is about 607.4634542530.

The spelling of 224161212 in words is "two hundred twenty-four million, one hundred sixty-one thousand, two hundred twelve".