2601043221 has 8 divisors (see below), whose sum is σ = 3963494464. Its totient is φ = 1486310400.

The previous prime is 2601043219. The next prime is 2601043223. The reversal of 2601043221 is 1223401062.

It is an interprime number because it is at equal distance from previous prime (2601043219) and next prime (2601043223).

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

It is not a de Polignac number, because 2601043221 - 2¹ = 2601043219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 123859201 = 2601043221 / (2 + 6 + 0 + 1 + 0 + 4 + 3 + 2 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601043223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61929580 + ... + 61929621.

It is an arithmetic number, because the mean of its divisors is an integer number (495436808).

Almost surely, 2^2601043221 is an apocalyptic number.

2601043221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2601043221 is a deficient number, since it is larger than the sum of its proper divisors (1362451243).

2601043221 is a wasteful number, since it uses less digits than its factorization.

2601043221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123859211.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2601043221 is about 51000.4237335338. The cubic root of 2601043221 is about 1375.2527528308.

Adding to 2601043221 its reverse (1223401062), we get a palindrome (3824444283).

The spelling of 2601043221 in words is "two billion, six hundred one million, forty-three thousand, two hundred twenty-one".