1304241120021 has 16 divisors (see below), whose sum is σ = 1992371200128. Its totient is φ = 743422080000.

The previous prime is 1304241119999. The next prime is 1304241120029. The reversal of 1304241120021 is 1200211424031.

It is not a de Polignac number, because 1304241120021 - 2¹⁹ = 1304240595733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304241120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304241120029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77431380 + ... + 77448221.

It is an arithmetic number, because the mean of its divisors is an integer number (124523200008).

Almost surely, 2^{1304241120021} is an apocalyptic number.

It is an amenable number.

1304241120021 is a deficient number, since it is larger than the sum of its proper divisors (688130080107).

1304241120021 is a wasteful number, since it uses less digits than its factorization.

1304241120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154880012.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1304241120021 its reverse (1200211424031), we get a palindrome (2504452544052).

The spelling of 1304241120021 in words is "one trillion, three hundred four billion, two hundred forty-one million, one hundred twenty thousand, twenty-one".