12213588 has 12 divisors (see below), whose sum is σ = 28498400. Its totient is φ = 4071192.

The previous prime is 12213587. The next prime is 12213601. The reversal of 12213588 is 88531221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508888 + ... + 508911.

Almost surely, 2^12213588 is an apocalyptic number.

It is an amenable number.

12213588 is an abundant number, since it is smaller than the sum of its proper divisors (16284812).

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

12213588 is a wasteful number, since it uses less digits than its factorization.

12213588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017806 (or 1017804 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 12213588 is about 3494.7944145543. The cubic root of 12213588 is about 230.2931862863.

The spelling of 12213588 in words is "twelve million, two hundred thirteen thousand, five hundred eighty-eight".