12213442 has 8 divisors (see below), whose sum is σ = 18911232. Its totient is φ = 5909700.

The previous prime is 12213403. The next prime is 12213469. The reversal of 12213442 is 24431221.

12213442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 98434 + ... + 98557.

It is an arithmetic number, because the mean of its divisors is an integer number (2363904).

Almost surely, 2^12213442 is an apocalyptic number.

12213442 is a deficient number, since it is larger than the sum of its proper divisors (6697790).

12213442 is a wasteful number, since it uses less digits than its factorization.

12213442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197024.

The product of its digits is 384, while the sum is 19.

The square root of 12213442 is about 3494.7735262818. The cubic root of 12213442 is about 230.2922686488.

Adding to 12213442 its reverse (24431221), we get a palindrome (36644663).

The spelling of 12213442 in words is "twelve million, two hundred thirteen thousand, four hundred forty-two".