1221102109967 has 2 divisors, whose sum is σ = 1221102109968. Its totient is φ = 1221102109966.

The previous prime is 1221102109951. The next prime is 1221102110029. The reversal of 1221102109967 is 7699012011221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221102109967 - 2⁴ = 1221102109951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221102109937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610551054983 + 610551054984.

It is an arithmetic number, because the mean of its divisors is an integer number (610551054984).

Almost surely, 2^{1221102109967} is an apocalyptic number.

1221102109967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221102109967 is an equidigital number, since it uses as much as digits as its factorization.

1221102109967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 1221102109967 in words is "one trillion, two hundred twenty-one billion, one hundred two million, one hundred nine thousand, nine hundred sixty-seven".