1212243130 has 64 divisors (see below), whose sum is σ = 2644565760. Its totient is φ = 390818304.

The previous prime is 1212243121. The next prime is 1212243161. The reversal of 1212243130 is 313422121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1212243098 and 1212243107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178884 + ... + 185536.

It is an arithmetic number, because the mean of its divisors is an integer number (41321340).

Almost surely, 2^1212243130 is an apocalyptic number.

1212243130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212243130 is an abundant number, since it is smaller than the sum of its proper divisors (1432322630).

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

1212243130 is a wasteful number, since it uses less digits than its factorization.

1212243130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212243130 is about 34817.2820593452. The cubic root of 1212243130 is about 1066.2603108182.

Adding to 1212243130 its reverse (313422121), we get a palindrome (1525665251).

The spelling of 1212243130 in words is "one billion, two hundred twelve million, two hundred forty-three thousand, one hundred thirty".