1213323023101 has 20 divisors (see below), whose sum is σ = 1489957217600. Its totient is φ = 985254748632.

The previous prime is 1213323023089. The next prime is 1213323023119. The reversal of 1213323023101 is 1013203233121.

It is not a de Polignac number, because 1213323023101 - 2⁹ = 1213323022589 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 (1213323023161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13252821 + ... + 13344058.

It is an arithmetic number, because the mean of its divisors is an integer number (74497860880).

Almost surely, 2^{1213323023101} is an apocalyptic number.

It is an amenable number.

1213323023101 is a deficient number, since it is larger than the sum of its proper divisors (276634194499).

1213323023101 is an frugal number, since it uses more digits than its factorization.

1213323023101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26596926 (or 26596905 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1213323023101 its reverse (1013203233121), we get a palindrome (2226526256222).

The spelling of 1213323023101 in words is "one trillion, two hundred thirteen billion, three hundred twenty-three million, twenty-three thousand, one hundred one".