12212134 has 8 divisors (see below), whose sum is σ = 19983528.
Its totient is φ = 5550960.
The previous prime is 12212131. The next prime is 12212141. The reversal of 12212134 is 43121221.
12212134 = 274 + 284 + ... + 374.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12212131) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277527 + ... + 277570.
It is an arithmetic number, because the mean of its divisors is an integer number (2497941).
Almost surely, 212212134 is an apocalyptic number.
12212134 is a deficient number, since it is larger than the sum of its proper divisors (7771394).
12212134 is a wasteful number, since it uses less digits than its factorization.
12212134 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 555110.
The product of its digits is 96, while the sum is 16.
The square root of 12212134 is about 3494.5863846813.
The cubic root of 12212134 is about 230.2840472962.
Adding to 12212134 its reverse (43121221), we get a palindrome (55333355).
The spelling of 12212134 in words is "twelve million, two hundred twelve thousand, one hundred thirty-four".