12011212123213 has 8 divisors (see below), whose sum is σ = 12052801160928. Its totient is φ = 11969673286224.

The previous prime is 12011212123181. The next prime is 12011212123231. The reversal of 12011212123213 is 31232121211021.

It is a happy number.

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 12011212123213 - 2⁵ = 12011212123181 is a prime.

It is a super-3 number, since 3×12011212123213³ (a number of 40 digits) contains 333 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 (12011218123213) 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, 12070795 + ... + 13027912.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600145116).

Almost surely, 2^{12011212123213} is an apocalyptic number.

It is an amenable number.

12011212123213 is a deficient number, since it is larger than the sum of its proper divisors (41589037715).

12011212123213 is a wasteful number, since it uses less digits than its factorization.

12011212123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25100363.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12011212123213 its reverse (31232121211021), we get a palindrome (43243333334234).

The spelling of 12011212123213 in words is "twelve trillion, eleven billion, two hundred twelve million, one hundred twenty-three thousand, two hundred thirteen".