202002223021 has 2 divisors, whose sum is σ = 202002223022. Its totient is φ = 202002223020.

The previous prime is 202002222899. The next prime is 202002223037. The reversal of 202002223021 is 120322200202.

202002223021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (202002223037) can be obtained adding 202002223021 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157381997796 + 44620225225 = 396714^2 + 211235^2 .

It is a cyclic number.

It is not a de Polignac number, because 202002223021 - 2²¹ = 202000125869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202002222986 and 202002223004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202002223081) 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 as a sum of consecutive naturals, namely, 101001111510 + 101001111511.

It is an arithmetic number, because the mean of its divisors is an integer number (101001111511).

Almost surely, 2^202002223021 is an apocalyptic number.

It is an amenable number.

202002223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

202002223021 is an equidigital number, since it uses as much as digits as its factorization.

202002223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 202002223021 its reverse (120322200202), we get a palindrome (322324423223).

The spelling of 202002223021 in words is "two hundred two billion, two million, two hundred twenty-three thousand, twenty-one".