1001221222207 has 2 divisors, whose sum is σ = 1001221222208. Its totient is φ = 1001221222206.

The previous prime is 1001221222193. The next prime is 1001221222229. The reversal of 1001221222207 is 7022221221001.

It is an a-pointer prime, because the next prime (1001221222229) can be obtained adding 1001221222207 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001221222207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001221222307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500610611103 + 500610611104.

It is an arithmetic number, because the mean of its divisors is an integer number (500610611104).

Almost surely, 2^{1001221222207} is an apocalyptic number.

1001221222207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001221222207 is an equidigital number, since it uses as much as digits as its factorization.

1001221222207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 1001221222207 its reverse (7022221221001), we get a palindrome (8023442443208).

The spelling of 1001221222207 in words is "one trillion, one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred seven".