201002202221 has 2 divisors, whose sum is σ = 201002202222. Its totient is φ = 201002202220.

The previous prime is 201002202179. The next prime is 201002202227. The reversal of 201002202221 is 122202200102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200873379721 + 128822500 = 448189^2 + 11350^2 .

It is a cyclic number.

It is not a de Polignac number, because 201002202221 - 2¹⁸ = 201001940077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201002202196 and 201002202205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201002202227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100501101110 + 100501101111.

It is an arithmetic number, because the mean of its divisors is an integer number (100501101111).

Almost surely, 2^201002202221 is an apocalyptic number.

It is an amenable number.

201002202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201002202221 is an equidigital number, since it uses as much as digits as its factorization.

201002202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201002202221 its reverse (122202200102), we get a palindrome (323204402323).

The spelling of 201002202221 in words is "two hundred one billion, two million, two hundred two thousand, two hundred twenty-one".