12001223120213 has 4 divisors (see below), whose sum is σ = 12707177421420. Its totient is φ = 11295268819008.

The previous prime is 12001223120167. The next prime is 12001223120351. The reversal of 12001223120213 is 31202132210021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10621615482724 + 1379607637489 = 3259082^2 + 1174567^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001223120213 - 2¹⁶ = 12001223054677 is a prime.

It is a super-2 number, since 2×12001223120213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001228120213) 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, 352977150578 + ... + 352977150611.

It is an arithmetic number, because the mean of its divisors is an integer number (3176794355355).

Almost surely, 2^{12001223120213} is an apocalyptic number.

It is an amenable number.

12001223120213 is a deficient number, since it is larger than the sum of its proper divisors (705954301207).

12001223120213 is an equidigital number, since it uses as much as digits as its factorization.

12001223120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705954301206.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12001223120213 its reverse (31202132210021), we get a palindrome (43203355330234).

The spelling of 12001223120213 in words is "twelve trillion, one billion, two hundred twenty-three million, one hundred twenty thousand, two hundred thirteen".