1101223121313 has 16 divisors (see below), whose sum is σ = 1678104207360. Its totient is φ = 629251632336.

The previous prime is 1101223121287. The next prime is 1101223121347. The reversal of 1101223121313 is 3131213221011.

It is not a de Polignac number, because 1101223121313 - 2⁵ = 1101223121281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1101223121313.

It is not an unprimeable number, because it can be changed into a prime (1101223121393) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 41223 + ... + 1484636.

It is an arithmetic number, because the mean of its divisors is an integer number (104881512960).

Almost surely, 2^{1101223121313} is an apocalyptic number.

It is an amenable number.

1101223121313 is a deficient number, since it is larger than the sum of its proper divisors (576881086047).

1101223121313 is a wasteful number, since it uses less digits than its factorization.

1101223121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560236.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1101223121313 its reverse (3131213221011), we get a palindrome (4232436342324).

The spelling of 1101223121313 in words is "one trillion, one hundred one billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred thirteen".