1204421203231 has 4 divisors (see below), whose sum is σ = 1204467979032. Its totient is φ = 1204374427432.

The previous prime is 1204421203213. The next prime is 1204421203267. The reversal of 1204421203231 is 1323021244021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1204421203231 - 2¹⁹ = 1204420678943 is a prime.

It is a super-2 number, since 2×1204421203231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1204421203196 and 1204421203205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204421203201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23349256 + ... + 23400781.

It is an arithmetic number, because the mean of its divisors is an integer number (301116994758).

Almost surely, 2^{1204421203231} is an apocalyptic number.

1204421203231 is a deficient number, since it is larger than the sum of its proper divisors (46775801).

1204421203231 is an equidigital number, since it uses as much as digits as its factorization.

1204421203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46775800.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1204421203231 its reverse (1323021244021), we get a palindrome (2527442447252).

The spelling of 1204421203231 in words is "one trillion, two hundred four billion, four hundred twenty-one million, two hundred three thousand, two hundred thirty-one".