201302222021 has 4 divisors (see below), whose sum is σ = 201303127212. Its totient is φ = 201301316832.

The previous prime is 201302221979. The next prime is 201302222041. The reversal of 201302222021 is 120222203102.

201302222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120222203102 = 2 ⋅60111101551.

It can be written as a sum of positive squares in 2 ways, for example, as 104759032225 + 96543189796 = 323665^2 + 310714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201302222021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201302222041) 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 3 ways as a sum of consecutive naturals, for example, 137051 + ... + 649143.

It is an arithmetic number, because the mean of its divisors is an integer number (50325781803).

Almost surely, 2^201302222021 is an apocalyptic number.

It is an amenable number.

201302222021 is a deficient number, since it is larger than the sum of its proper divisors (905191).

201302222021 is an equidigital number, since it uses as much as digits as its factorization.

201302222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905190.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 201302222021 its reverse (120222203102), we get a palindrome (321524425123).

The spelling of 201302222021 in words is "two hundred one billion, three hundred two million, two hundred twenty-two thousand, twenty-one".