1243204221230 has 16 divisors (see below), whose sum is σ = 2237799966480. Its totient is φ = 497274495552.

The previous prime is 1243204221199. The next prime is 1243204221247. The reversal of 1243204221230 is 321224023421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243204221230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142919 + ... + 1583298.

It is an arithmetic number, because the mean of its divisors is an integer number (139862497905).

Almost surely, 2^{1243204221230} is an apocalyptic number.

1243204221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243204221230 is a deficient number, since it is larger than the sum of its proper divisors (994595745250).

1243204221230 is a wasteful number, since it uses less digits than its factorization.

1243204221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798243.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1243204221230 its reverse (321224023421), we get a palindrome (1564428244651).

The spelling of 1243204221230 in words is "one trillion, two hundred forty-three billion, two hundred four million, two hundred twenty-one thousand, two hundred thirty".