12190212 has 36 divisors (see below), whose sum is σ = 31400460. Its totient is φ = 3986112.

The previous prime is 12190187. The next prime is 12190219. The reversal of 12190212 is 21209121.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 9036036 = 1776^2 + 3006^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1287 + ... + 5102.

It is an arithmetic number, because the mean of its divisors is an integer number (872235).

Almost surely, 2^12190212 is an apocalyptic number.

12190212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12190212 is an abundant number, since it is smaller than the sum of its proper divisors (19210248).

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

12190212 is a wasteful number, since it uses less digits than its factorization.

12190212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452 (or 6447 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 12190212 is about 3491.4484100442. The cubic root of 12190212 is about 230.1461704755.

Adding to 12190212 its reverse (21209121), we get a palindrome (33399333).

The spelling of 12190212 in words is "twelve million, one hundred ninety thousand, two hundred twelve".