1213012321003 has 8 divisors (see below), whose sum is σ = 1459262942720. Its totient is φ = 985002486120.

The previous prime is 1213012320977. The next prime is 1213012321007. The reversal of 1213012321003 is 3001232103121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213012321003 - 2²¹ = 1213010223851 is a prime.

It is a super-2 number, since 2×1213012321003² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213012321007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4560196563 + ... + 4560196828.

It is an arithmetic number, because the mean of its divisors is an integer number (182407867840).

Almost surely, 2^{1213012321003} is an apocalyptic number.

1213012321003 is a deficient number, since it is larger than the sum of its proper divisors (246250621717).

1213012321003 is an equidigital number, since it uses as much as digits as its factorization.

1213012321003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120393417.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1213012321003 its reverse (3001232103121), we get a palindrome (4214244424124).

The spelling of 1213012321003 in words is "one trillion, two hundred thirteen billion, twelve million, three hundred twenty-one thousand, three".