1320004424421 has 12 divisors (see below), whose sum is σ = 1942648021548. Its totient is φ = 863399120064.

The previous prime is 1320004424369. The next prime is 1320004424423. The reversal of 1320004424421 is 1244244000231.

1320004424421 is a `hidden beast` number, since 13 + 200 + 0 + 4 + 4 + 2 + 442 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 993289296321 + 326715128100 = 996639^2 + 571590^2 .

It is not a de Polignac number, because 1320004424421 - 2¹³ = 1320004416229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320004424423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1383651960 + ... + 1383652913.

It is an arithmetic number, because the mean of its divisors is an integer number (161887335129).

Almost surely, 2^{1320004424421} is an apocalyptic number.

It is an amenable number.

1320004424421 is a deficient number, since it is larger than the sum of its proper divisors (622643597127).

1320004424421 is a wasteful number, since it uses less digits than its factorization.

1320004424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767304932 (or 2767304929 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1320004424421 its reverse (1244244000231), we get a palindrome (2564248424652).

The spelling of 1320004424421 in words is "one trillion, three hundred twenty billion, four million, four hundred twenty-four thousand, four hundred twenty-one".