202002102001321 has 16 divisors (see below), whose sum is σ = 214218275389200. Its totient is φ = 189823022788608.

The previous prime is 202002102001303. The next prime is 202002102001331. The reversal of 202002102001321 is 123100201200202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 604139325696 + 201397962675625 = 777264^2 + 14191475^2 .

It is a cyclic number.

It is not a de Polignac number, because 202002102001321 - 2³⁷ = 201864663047849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202002102001295 and 202002102001304.

It is not an unprimeable number, because it can be changed into a prime (202002102001331) 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, 415922695 + ... + 416408083.

It is an arithmetic number, because the mean of its divisors is an integer number (13388642211825).

Almost surely, 2^{202002102001321} is an apocalyptic number.

It is an amenable number.

202002102001321 is a deficient number, since it is larger than the sum of its proper divisors (12216173387879).

202002102001321 is a wasteful number, since it uses less digits than its factorization.

202002102001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523548.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 202002102001321 its reverse (123100201200202), we get a palindrome (325102303201523).

The spelling of 202002102001321 in words is "two hundred two trillion, two billion, one hundred two million, one thousand, three hundred twenty-one".