1304243211021 has 8 divisors (see below), whose sum is σ = 1738996756224. Its totient is φ = 869492569920.

The previous prime is 1304243210929. The next prime is 1304243211031. The reversal of 1304243211021 is 1201123424031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1304243211021 - 2⁹ = 1304243210509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304243210982 and 1304243211000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304243211031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751365 + ... + 1781301.

It is an arithmetic number, because the mean of its divisors is an integer number (217374594528).

Almost surely, 2^{1304243211021} is an apocalyptic number.

It is an amenable number.

1304243211021 is a deficient number, since it is larger than the sum of its proper divisors (434753545203).

1304243211021 is a wasteful number, since it uses less digits than its factorization.

1304243211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452051.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1304243211021 its reverse (1201123424031), we get a palindrome (2505366635052).

The spelling of 1304243211021 in words is "one trillion, three hundred four billion, two hundred forty-three million, two hundred eleven thousand, twenty-one".