1221192822403 has 2 divisors, whose sum is σ = 1221192822404. Its totient is φ = 1221192822402.

The previous prime is 1221192822401. The next prime is 1221192822433. The reversal of 1221192822403 is 3042282911221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221192822403 - 2¹ = 1221192822401 is a prime.

Together with 1221192822401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1221192822401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610596411201 + 610596411202.

It is an arithmetic number, because the mean of its divisors is an integer number (610596411202).

Almost surely, 2^{1221192822403} is an apocalyptic number.

1221192822403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221192822403 is an equidigital number, since it uses as much as digits as its factorization.

1221192822403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 1221192822403 in words is "one trillion, two hundred twenty-one billion, one hundred ninety-two million, eight hundred twenty-two thousand, four hundred three".