12121321212213 has 8 divisors (see below), whose sum is σ = 17012380648800. Its totient is φ = 7655571291888.

The previous prime is 12121321212197. The next prime is 12121321212223. The reversal of 12121321212213 is 31221212312121.

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

It is not a de Polignac number, because 12121321212213 - 2⁴ = 12121321212197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121321212223) 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, 106327378998 + ... + 106327379111.

It is an arithmetic number, because the mean of its divisors is an integer number (2126547581100).

Almost surely, 2^{12121321212213} is an apocalyptic number.

It is an amenable number.

12121321212213 is a deficient number, since it is larger than the sum of its proper divisors (4891059436587).

12121321212213 is a wasteful number, since it uses less digits than its factorization.

12121321212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212654758131.

The product of its digits is 576, while the sum is 24.

Adding to 12121321212213 its reverse (31221212312121), we get a palindrome (43342533524334).

The spelling of 12121321212213 in words is "twelve trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred twelve thousand, two hundred thirteen".