202120043321 has 16 divisors (see below), whose sum is σ = 244794530304. Its totient is φ = 162913296384.

The previous prime is 202120043249. The next prime is 202120043383. The reversal of 202120043321 is 123340021202.

It is a cyclic number.

It is not a de Polignac number, because 202120043321 - 2¹⁴ = 202120026937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202120043293 and 202120043302.

It is not an unprimeable number, because it can be changed into a prime (202120043621) 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, 599345 + ... + 873758.

It is an arithmetic number, because the mean of its divisors is an integer number (15299658144).

Almost surely, 2^202120043321 is an apocalyptic number.

It is an amenable number.

202120043321 is a deficient number, since it is larger than the sum of its proper divisors (42674486983).

202120043321 is a wasteful number, since it uses less digits than its factorization.

202120043321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474280.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 202120043321 its reverse (123340021202), we get a palindrome (325460064523).

The spelling of 202120043321 in words is "two hundred two billion, one hundred twenty million, forty-three thousand, three hundred twenty-one".