1065222121 has 2 divisors, whose sum is σ = 1065222122. Its totient is φ = 1065222120.

The previous prime is 1065222071. The next prime is 1065222131. The reversal of 1065222121 is 1212225601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973752025 + 91470096 = 31205^2 + 9564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065222121 - 2¹⁵ = 1065189353 is a prime.

It is a super-2 number, since 2×1065222121² = 2269396334135477282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065222092 and 1065222101.

It is not a weakly prime, because it can be changed into another prime (1065222131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532611060 + 532611061.

It is an arithmetic number, because the mean of its divisors is an integer number (532611061).

Almost surely, 2^1065222121 is an apocalyptic number.

It is an amenable number.

1065222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065222121 is an equidigital number, since it uses as much as digits as its factorization.

1065222121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1065222121 is about 32637.7407459524. The cubic root of 1065222121 is about 1021.2844644186.

Adding to 1065222121 its reverse (1212225601), we get a palindrome (2277447722).

The spelling of 1065222121 in words is "one billion, sixty-five million, two hundred twenty-two thousand, one hundred twenty-one".