1212230412 has 18 divisors (see below), whose sum is σ = 3064249188. Its totient is φ = 404076792.

The previous prime is 1212230401. The next prime is 1212230447. The reversal of 1212230412 is 2140322121.

It is a happy number.

1212230412 is a `hidden beast` number, since 1 + 21 + 2 + 230 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16836498 + ... + 16836569.

It is an arithmetic number, because the mean of its divisors is an integer number (170236066).

Almost surely, 2^1212230412 is an apocalyptic number.

1212230412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212230412 is an abundant number, since it is smaller than the sum of its proper divisors (1852018776).

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

1212230412 is a wasteful number, since it uses less digits than its factorization.

1212230412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33673077 (or 33673072 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1212230412 is about 34817.0994196817. The cubic root of 1212230412 is about 1066.2565819881.

Adding to 1212230412 its reverse (2140322121), we get a palindrome (3352552533).

The spelling of 1212230412 in words is "one billion, two hundred twelve million, two hundred thirty thousand, four hundred twelve".