1101221323013 has 4 divisors (see below), whose sum is σ = 1258538654880. Its totient is φ = 943903991148.

The previous prime is 1101221322997. The next prime is 1101221323021. The reversal of 1101221323013 is 3103231221011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1101221323013 - 2⁴ = 1101221322997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101221323043) 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, 78658665923 + ... + 78658665936.

It is an arithmetic number, because the mean of its divisors is an integer number (314634663720).

Almost surely, 2^{1101221323013} is an apocalyptic number.

It is an amenable number.

1101221323013 is a deficient number, since it is larger than the sum of its proper divisors (157317331867).

1101221323013 is an equidigital number, since it uses as much as digits as its factorization.

1101221323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157317331866.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1101221323013 its reverse (3103231221011), we get a palindrome (4204452544024).

The spelling of 1101221323013 in words is "one trillion, one hundred one billion, two hundred twenty-one million, three hundred twenty-three thousand, thirteen".