2621321201 has 8 divisors (see below), whose sum is σ = 2743137600. Its totient is φ = 2500158672.

The previous prime is 2621321161. The next prime is 2621321221. The reversal of 2621321201 is 1021231262.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2621321201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2621321221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155255 + ... + 171308.

It is an arithmetic number, because the mean of its divisors is an integer number (342892200).

Almost surely, 2^2621321201 is an apocalyptic number.

It is an amenable number.

2621321201 is a deficient number, since it is larger than the sum of its proper divisors (121816399).

2621321201 is a wasteful number, since it uses less digits than its factorization.

2621321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326935.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2621321201 is about 51198.8398403714. The cubic root of 2621321201 is about 1378.8173724738.

Adding to 2621321201 its reverse (1021231262), we get a palindrome (3642552463).

The spelling of 2621321201 in words is "two billion, six hundred twenty-one million, three hundred twenty-one thousand, two hundred one".