1213031221323 has 8 divisors (see below), whose sum is σ = 1620039502848. Its totient is φ = 807355210344.

The previous prime is 1213031221319. The next prime is 1213031221327. The reversal of 1213031221323 is 3231221303121.

It is an interprime number because it is at equal distance from previous prime (1213031221319) and next prime (1213031221327).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213031221323 - 2² = 1213031221319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213031221293 and 1213031221302.

It is not an unprimeable number, because it can be changed into a prime (1213031221327) 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 7 ways as a sum of consecutive naturals, for example, 333065511 + ... + 333069152.

It is an arithmetic number, because the mean of its divisors is an integer number (202504937856).

Almost surely, 2^{1213031221323} is an apocalyptic number.

1213031221323 is a deficient number, since it is larger than the sum of its proper divisors (407008281525).

1213031221323 is an equidigital number, since it uses as much as digits as its factorization.

1213031221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666135273.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213031221323 its reverse (3231221303121), we get a palindrome (4444252524444).

The spelling of 1213031221323 in words is "one trillion, two hundred thirteen billion, thirty-one million, two hundred twenty-one thousand, three hundred twenty-three".