1101221111329 has 2 divisors, whose sum is σ = 1101221111330. Its totient is φ = 1101221111328.

The previous prime is 1101221111303. The next prime is 1101221111401. The reversal of 1101221111329 is 9231111221011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086712427025 + 14508684304 = 1042455^2 + 120452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101221111329 - 2¹¹ = 1101221109281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101221117329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610555664 + 550610555665.

It is an arithmetic number, because the mean of its divisors is an integer number (550610555665).

Almost surely, 2^{1101221111329} is an apocalyptic number.

It is an amenable number.

1101221111329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221111329 is an equidigital number, since it uses as much as digits as its factorization.

1101221111329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 1101221111329 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred eleven thousand, three hundred twenty-nine".