12142212 has 24 divisors (see below), whose sum is σ = 28523712. Its totient is φ = 4020000.

The previous prime is 12142177. The next prime is 12142217. The reversal of 12142212 is 21224121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12142191 and 12142200.

It is not an unprimeable number, because it can be changed into a prime (12142217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539 + ... + 5162.

It is an arithmetic number, because the mean of its divisors is an integer number (1188488).

Almost surely, 2^12142212 is an apocalyptic number.

12142212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12142212 is an abundant number, since it is smaller than the sum of its proper divisors (16381500).

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

12142212 is a wasteful number, since it uses less digits than its factorization.

12142212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6859 (or 6857 counting only the distinct ones).

The product of its digits is 64, while the sum is 15.

The square root of 12142212 is about 3484.5676919813. The cubic root of 12142212 is about 229.8436997308.

Adding to 12142212 its reverse (21224121), we get a palindrome (33366333).

The spelling of 12142212 in words is "twelve million, one hundred forty-two thousand, two hundred twelve".