1022002222261 has 2 divisors, whose sum is σ = 1022002222262. Its totient is φ = 1022002222260.

The previous prime is 1022002222139. The next prime is 1022002222273. The reversal of 1022002222261 is 1622222002201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1015044160036 + 6958062225 = 1007494^2 + 83415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022002222261 - 2¹⁵ = 1022002189493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022002222061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511001111130 + 511001111131.

It is an arithmetic number, because the mean of its divisors is an integer number (511001111131).

Almost surely, 2^{1022002222261} is an apocalyptic number.

It is an amenable number.

1022002222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022002222261 is an equidigital number, since it uses as much as digits as its factorization.

1022002222261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1022002222261 its reverse (1622222002201), we get a palindrome (2644224224462).

The spelling of 1022002222261 in words is "one trillion, twenty-two billion, two million, two hundred twenty-two thousand, two hundred sixty-one".