1002221267 has 2 divisors, whose sum is σ = 1002221268. Its totient is φ = 1002221266.

The previous prime is 1002221263. The next prime is 1002221293. The reversal of 1002221267 is 7621222001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002221267 - 2² = 1002221263 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002221263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110633 + 501110634.

It is an arithmetic number, because the mean of its divisors is an integer number (501110634).

Almost surely, 2^1002221267 is an apocalyptic number.

1002221267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002221267 is an equidigital number, since it uses as much as digits as its factorization.

1002221267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1002221267 is about 31657.8784349173. The cubic root of 1002221267 is about 1000.7398747836.

Adding to 1002221267 its reverse (7621222001), we get a palindrome (8623443268).

The spelling of 1002221267 in words is "one billion, two million, two hundred twenty-one thousand, two hundred sixty-seven".