1201312321204 has 24 divisors (see below), whose sum is σ = 2124054178400. Its totient is φ = 594452532960.

The previous prime is 1201312321199. The next prime is 1201312321207. The reversal of 1201312321204 is 4021232131021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201312321207) by changing a digit.

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, 1229262 + ... + 1978309.

Almost surely, 2^{1201312321204} is an apocalyptic number.

It is an amenable number.

1201312321204 is a deficient number, since it is larger than the sum of its proper divisors (922741857196).

1201312321204 is a wasteful number, since it uses less digits than its factorization.

1201312321204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208543 (or 3208541 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1201312321204 its reverse (4021232131021), we get a palindrome (5222544452225).

The spelling of 1201312321204 in words is "one trillion, two hundred one billion, three hundred twelve million, three hundred twenty-one thousand, two hundred four".