1021222313 has 2 divisors, whose sum is σ = 1021222314. Its totient is φ = 1021222312.

The previous prime is 1021222261. The next prime is 1021222337. The reversal of 1021222313 is 3132221201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008888169 + 12334144 = 31763^2 + 3512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021222313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1021222291 and 1021222300.

It is not a weakly prime, because it can be changed into another prime (1021222343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510611156 + 510611157.

It is an arithmetic number, because the mean of its divisors is an integer number (510611157).

Almost surely, 2^1021222313 is an apocalyptic number.

It is an amenable number.

1021222313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021222313 is an equidigital number, since it uses as much as digits as its factorization.

1021222313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1021222313 is about 31956.5691681695. The cubic root of 1021222313 is about 1007.0246431765.

Adding to 1021222313 its reverse (3132221201), we get a palindrome (4153443514).

The spelling of 1021222313 in words is "one billion, twenty-one million, two hundred twenty-two thousand, three hundred thirteen".