1204521243311 has 4 divisors (see below), whose sum is σ = 1275375434112. Its totient is φ = 1133667052512.

The previous prime is 1204521243307. The next prime is 1204521243313. The reversal of 1204521243311 is 1133421254021.

It is a happy number.

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 1204521243311 - 2² = 1204521243307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204521243313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35427095375 + ... + 35427095408.

It is an arithmetic number, because the mean of its divisors is an integer number (318843858528).

Almost surely, 2^{1204521243311} is an apocalyptic number.

1204521243311 is a deficient number, since it is larger than the sum of its proper divisors (70854190801).

1204521243311 is an equidigital number, since it uses as much as digits as its factorization.

1204521243311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70854190800.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1204521243311 its reverse (1133421254021), we get a palindrome (2337942497332).

The spelling of 1204521243311 in words is "one trillion, two hundred four billion, five hundred twenty-one million, two hundred forty-three thousand, three hundred eleven".