221002222102201 has 2 divisors, whose sum is σ = 221002222102202. Its totient is φ = 221002222102200.

The previous prime is 221002222102187. The next prime is 221002222102213. The reversal of 221002222102201 is 102201222200122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219976506876025 + 1025715226176 = 14831605^2 + 1012776^2 .

It is a cyclic number.

It is not a de Polignac number, because 221002222102201 - 2⁵ = 221002222102169 is a prime.

It is a super-2 number, since 2×221002222102201² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221002222702201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501111051100 + 110501111051101.

It is an arithmetic number, because the mean of its divisors is an integer number (110501111051101).

Almost surely, 2^{221002222102201} is an apocalyptic number.

It is an amenable number.

221002222102201 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002222102201 is an equidigital number, since it uses as much as digits as its factorization.

221002222102201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221002222102201 its reverse (102201222200122), we get a palindrome (323203444302323).

The spelling of 221002222102201 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, one hundred two thousand, two hundred one".