202221022061 has 2 divisors, whose sum is σ = 202221022062. Its totient is φ = 202221022060.

The previous prime is 202221022049. The next prime is 202221022079. The reversal of 202221022061 is 160220122202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126117316900 + 76103705161 = 355130^2 + 275869^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221022061 - 2⁶ = 202221021997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202221022001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110511030 + 101110511031.

It is an arithmetic number, because the mean of its divisors is an integer number (101110511031).

Almost surely, 2^202221022061 is an apocalyptic number.

It is an amenable number.

202221022061 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221022061 is an equidigital number, since it uses as much as digits as its factorization.

202221022061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 202221022061 its reverse (160220122202), we get a palindrome (362441144263).

The spelling of 202221022061 in words is "two hundred two billion, two hundred twenty-one million, twenty-two thousand, sixty-one".