1101221111323 has 4 divisors (see below), whose sum is σ = 1101227698368. Its totient is φ = 1101214524280.

The previous prime is 1101221111303. The next prime is 1101221111329. The reversal of 1101221111323 is 3231111221011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101221111323 - 2⁹ = 1101221110811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221111323.

It is not an unprimeable number, because it can be changed into a prime (1101221111329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3036043 + ... + 3379348.

It is an arithmetic number, because the mean of its divisors is an integer number (275306924592).

Almost surely, 2^{1101221111323} is an apocalyptic number.

1101221111323 is a deficient number, since it is larger than the sum of its proper divisors (6587045).

1101221111323 is an equidigital number, since it uses as much as digits as its factorization.

1101221111323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587044.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1101221111323 its reverse (3231111221011), we get a palindrome (4332332332334).

The spelling of 1101221111323 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred eleven thousand, three hundred twenty-three".