1121021221267 has 2 divisors, whose sum is σ = 1121021221268. Its totient is φ = 1121021221266.

The previous prime is 1121021221181. The next prime is 1121021221303. The reversal of 1121021221267 is 7621221201211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121021221267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121021222267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510610633 + 560510610634.

It is an arithmetic number, because the mean of its divisors is an integer number (560510610634).

Almost surely, 2^{1121021221267} is an apocalyptic number.

1121021221267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121021221267 is an equidigital number, since it uses as much as digits as its factorization.

1121021221267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 1121021221267 its reverse (7621221201211), we get a palindrome (8742242422478).

The spelling of 1121021221267 in words is "one trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty-one thousand, two hundred sixty-seven".