1212143230 has 16 divisors (see below), whose sum is σ = 2214424080. Its totient is φ = 477620352.

The previous prime is 1212143221. The next prime is 1212143267. The reversal of 1212143230 is 323412121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1212143198 and 1212143207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903915 + ... + 905254.

It is an arithmetic number, because the mean of its divisors is an integer number (138401505).

Almost surely, 2^1212143230 is an apocalyptic number.

1212143230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212143230 is a deficient number, since it is larger than the sum of its proper divisors (1002280850).

1212143230 is a wasteful number, since it uses less digits than its factorization.

1212143230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809243.

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

The square root of 1212143230 is about 34815.8473974137. The cubic root of 1212143230 is about 1066.2310201232.

Adding to 1212143230 its reverse (323412121), we get a palindrome (1535555351).

The spelling of 1212143230 in words is "one billion, two hundred twelve million, one hundred forty-three thousand, two hundred thirty".