4204004001221 has 8 divisors (see below), whose sum is σ = 4546006830720. Its totient is φ = 3872524335808.

The previous prime is 4204004001217. The next prime is 4204004001271. The reversal of 4204004001221 is 1221004004024.

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

It is a cyclic number.

It is not a de Polignac number, because 4204004001221 - 2² = 4204004001217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4204004001193 and 4204004001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4204004001271) 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, 2630790191 + ... + 2630791788.

It is an arithmetic number, because the mean of its divisors is an integer number (568250853840).

Almost surely, 2^{4204004001221} is an apocalyptic number.

It is an amenable number.

4204004001221 is a deficient number, since it is larger than the sum of its proper divisors (342002829499).

4204004001221 is a wasteful number, since it uses less digits than its factorization.

4204004001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261582043.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 4204004001221 its reverse (1221004004024), we get a palindrome (5425008005245).

The spelling of 4204004001221 in words is "four trillion, two hundred four billion, four million, one thousand, two hundred twenty-one".