1221010122067 has 2 divisors, whose sum is σ = 1221010122068. Its totient is φ = 1221010122066.

The previous prime is 1221010122047. The next prime is 1221010122121. The reversal of 1221010122067 is 7602210101221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221010122067 - 2³¹ = 1218862638419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221010122047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610505061033 + 610505061034.

It is an arithmetic number, because the mean of its divisors is an integer number (610505061034).

Almost surely, 2^{1221010122067} is an apocalyptic number.

1221010122067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221010122067 is an equidigital number, since it uses as much as digits as its factorization.

1221010122067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 1221010122067 its reverse (7602210101221), we get a palindrome (8823220223288).

The spelling of 1221010122067 in words is "one trillion, two hundred twenty-one billion, ten million, one hundred twenty-two thousand, sixty-seven".