1021221219103 has 2 divisors, whose sum is σ = 1021221219104. Its totient is φ = 1021221219102.

The previous prime is 1021221219097. The next prime is 1021221219127. The reversal of 1021221219103 is 3019121221201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021221219103 - 2¹⁷ = 1021221088031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021221219173) 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, 510610609551 + 510610609552.

It is an arithmetic number, because the mean of its divisors is an integer number (510610609552).

Almost surely, 2^{1021221219103} is an apocalyptic number.

1021221219103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021221219103 is an equidigital number, since it uses as much as digits as its factorization.

1021221219103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1021221219103 in words is "one trillion, twenty-one billion, two hundred twenty-one million, two hundred nineteen thousand, one hundred three".