1213303122101 has 12 divisors (see below), whose sum is σ = 1425121574688. Its totient is φ = 1011866688432.

The previous prime is 1213303122047. The next prime is 1213303122107. The reversal of 1213303122101 is 1012213033121.

It is a happy number.

It is not a de Polignac number, because 1213303122101 - 2⁶ = 1213303122037 is a prime.

It is a super-3 number, since 3×1213303122101³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213303122107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63295391 + ... + 63314556.

It is an arithmetic number, because the mean of its divisors is an integer number (118760131224).

Almost surely, 2^{1213303122101} is an apocalyptic number.

It is an amenable number.

1213303122101 is a deficient number, since it is larger than the sum of its proper divisors (211818452587).

1213303122101 is an equidigital number, since it uses as much as digits as its factorization.

1213303122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126610028 (or 126609991 counting only the distinct ones).

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

Adding to 1213303122101 its reverse (1012213033121), we get a palindrome (2225516155222).

The spelling of 1213303122101 in words is "one trillion, two hundred thirteen billion, three hundred three million, one hundred twenty-two thousand, one hundred one".