224021212 has 12 divisors (see below), whose sum is σ = 401599296. Its totient is φ = 109278560.

The previous prime is 224021197. The next prime is 224021227. The reversal of 224021212 is 212120422.

It is an interprime number because it is at equal distance from previous prime (224021197) and next prime (224021227).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682828 + ... + 683155.

It is an arithmetic number, because the mean of its divisors is an integer number (33466608).

Almost surely, 2^224021212 is an apocalyptic number.

It is an amenable number.

224021212 is a deficient number, since it is larger than the sum of its proper divisors (177578084).

224021212 is a wasteful number, since it uses less digits than its factorization.

224021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366028 (or 1366026 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 224021212 is about 14967.3381735030. The cubic root of 224021212 is about 607.3369640454.

Adding to 224021212 its reverse (212120422), we get a palindrome (436141634).

The spelling of 224021212 in words is "two hundred twenty-four million, twenty-one thousand, two hundred twelve".