202221212110061 has 2 divisors, whose sum is σ = 202221212110062. Its totient is φ = 202221212110060.

The previous prime is 202221212110033. The next prime is 202221212110117. The reversal of 202221212110061 is 160011212122202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107816553075625 + 94404659034436 = 10383475^2 + 9716206^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221212110061 - 2¹⁸ = 202221211847917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202221212110031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110606055030 + 101110606055031.

It is an arithmetic number, because the mean of its divisors is an integer number (101110606055031).

Almost surely, 2^{202221212110061} is an apocalyptic number.

It is an amenable number.

202221212110061 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221212110061 is an equidigital number, since it uses as much as digits as its factorization.

202221212110061 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 23.

Adding to 202221212110061 its reverse (160011212122202), we get a palindrome (362232424232263).

The spelling of 202221212110061 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, sixty-one".