12222123013213 has 8 divisors (see below), whose sum is σ = 12647337481080. Its totient is φ = 11797159342080.

The previous prime is 12222123013211. The next prime is 12222123013223. The reversal of 12222123013213 is 31231032122221.

It can be written as a sum of positive squares in 4 ways, for example, as 2351800139364 + 9870322873849 = 1533558^2 + 3141707^2 .

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 12222123013213 - 2¹ = 12222123013211 is a prime.

It is a super-2 number, since 2×12222123013213² (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 (12222123013211) 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, 62600020 + ... + 62794957.

It is an arithmetic number, because the mean of its divisors is an integer number (1580917185135).

Almost surely, 2^{12222123013213} is an apocalyptic number.

It is an amenable number.

12222123013213 is a deficient number, since it is larger than the sum of its proper divisors (425214467867).

12222123013213 is a wasteful number, since it uses less digits than its factorization.

12222123013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125398367.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12222123013213 its reverse (31231032122221), we get a palindrome (43453155135434).

The spelling of 12222123013213 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-three million, thirteen thousand, two hundred thirteen".