1101221003 has 2 divisors, whose sum is σ = 1101221004. Its totient is φ = 1101221002.

The previous prime is 1101220999. The next prime is 1101221021. The reversal of 1101221003 is 3001221011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101221003 - 2² = 1101220999 is a prime.

It is a Sophie Germain prime.

It is a weakly prime.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610501 + 550610502.

It is an arithmetic number, because the mean of its divisors is an integer number (550610502).

Almost surely, 2^1101221003 is an apocalyptic number.

1101221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221003 is an equidigital number, since it uses as much as digits as its factorization.

1101221003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1101221003 is about 33184.6501111583. The cubic root of 1101221003 is about 1032.6619188048.

Adding to 1101221003 its reverse (3001221011), we get a palindrome (4102442014).

The spelling of 1101221003 in words is "one billion, one hundred one million, two hundred twenty-one thousand, three".