1213320112001 has 4 divisors (see below), whose sum is σ = 1231429367472. Its totient is φ = 1195210856532.

The previous prime is 1213320111943. The next prime is 1213320112019. The reversal of 1213320112001 is 1002110233121.

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 1213320112001 - 2⁶ = 1213320111937 is a prime.

It is a super-2 number, since 2×1213320112001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213320112021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9054627635 + ... + 9054627768.

It is an arithmetic number, because the mean of its divisors is an integer number (307857341868).

Almost surely, 2^{1213320112001} is an apocalyptic number.

It is an amenable number.

1213320112001 is a deficient number, since it is larger than the sum of its proper divisors (18109255471).

1213320112001 is an equidigital number, since it uses as much as digits as its factorization.

1213320112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18109255470.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1213320112001 its reverse (1002110233121), we get a palindrome (2215430345122).

The spelling of 1213320112001 in words is "one trillion, two hundred thirteen billion, three hundred twenty million, one hundred twelve thousand, one".