2221267513 has 2 divisors, whose sum is σ = 2221267514. Its totient is φ = 2221267512.

The previous prime is 2221267511. The next prime is 2221267547. The reversal of 2221267513 is 3157621222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1968075769 + 253191744 = 44363^2 + 15912^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221267513 - 2¹ = 2221267511 is a prime.

Together with 2221267511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2221267511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110633756 + 1110633757.

It is an arithmetic number, because the mean of its divisors is an integer number (1110633757).

Almost surely, 2^2221267513 is an apocalyptic number.

It is an amenable number.

2221267513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221267513 is an equidigital number, since it uses as much as digits as its factorization.

2221267513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 2221267513 is about 47130.3247707885. The cubic root of 2221267513 is about 1304.7689756091.

Adding to 2221267513 its reverse (3157621222), we get a palindrome (5378888735).

The spelling of 2221267513 in words is "two billion, two hundred twenty-one million, two hundred sixty-seven thousand, five hundred thirteen".