213001224 has 16 divisors (see below), whose sum is σ = 532503120. Its totient is φ = 71000400.

The previous prime is 213001213. The next prime is 213001249. The reversal of 213001224 is 422100312.

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, 4437502 + ... + 4437549.

It is an arithmetic number, because the mean of its divisors is an integer number (33281445).

Almost surely, 2^213001224 is an apocalyptic number.

213001224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213001224 is an abundant number, since it is smaller than the sum of its proper divisors (319501896).

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

213001224 is a wasteful number, since it uses less digits than its factorization.

213001224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875060 (or 8875056 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213001224 is about 14594.5614528152. The cubic root of 213001224 is about 597.2104059306.

Adding to 213001224 its reverse (422100312), we get a palindrome (635101536).

The spelling of 213001224 in words is "two hundred thirteen million, one thousand, two hundred twenty-four".