12211212322213 has 8 divisors (see below), whose sum is σ = 12930075002520. Its totient is φ = 11492411427840.

The previous prime is 12211212322181. The next prime is 12211212322223. The reversal of 12211212322213 is 31222321211221.

It can be written as a sum of positive squares in 4 ways, for example, as 2557750894209 + 9653461428004 = 1599297^2 + 3107002^2 .

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 12211212322213 - 2⁵ = 12211212322181 is a prime.

It is a super-2 number, since 2×12211212322213² (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 (12211212322223) 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, 15039268 + ... + 15830413.

It is an arithmetic number, because the mean of its divisors is an integer number (1616259375315).

Almost surely, 2^{12211212322213} is an apocalyptic number.

It is an amenable number.

12211212322213 is a deficient number, since it is larger than the sum of its proper divisors (718862680307).

12211212322213 is a wasteful number, since it uses less digits than its factorization.

12211212322213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30892967.

The product of its digits is 1152, while the sum is 25.

Adding to 12211212322213 its reverse (31222321211221), we get a palindrome (43433533533434).

The spelling of 12211212322213 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, three hundred twenty-two thousand, two hundred thirteen".