1221552103067 has 2 divisors, whose sum is σ = 1221552103068. Its totient is φ = 1221552103066.

The previous prime is 1221552103027. The next prime is 1221552103099. The reversal of 1221552103067 is 7603012551221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221552103067 - 2²⁴ = 1221535325851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221552103027) 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, 610776051533 + 610776051534.

It is an arithmetic number, because the mean of its divisors is an integer number (610776051534).

Almost surely, 2^{1221552103067} is an apocalyptic number.

1221552103067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221552103067 is an equidigital number, since it uses as much as digits as its factorization.

1221552103067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 1221552103067 its reverse (7603012551221), we get a palindrome (8824564654288).

It can be divided in two parts, 122155 and 2103067, that added together give a palindrome (2225222).

The spelling of 1221552103067 in words is "one trillion, two hundred twenty-one billion, five hundred fifty-two million, one hundred three thousand, sixty-seven".