12111121031213 has 8 divisors (see below), whose sum is σ = 12823613975808. Its totient is φ = 11398636315584.

The previous prime is 12111121031171. The next prime is 12111121031257. The reversal of 12111121031213 is 31213012111121.

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 12111121031213 - 2²⁶ = 12111053922349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111121030213) 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, 1112420 + ... + 5045762.

It is an arithmetic number, because the mean of its divisors is an integer number (1602951746976).

Almost surely, 2^{12111121031213} is an apocalyptic number.

It is an amenable number.

12111121031213 is a deficient number, since it is larger than the sum of its proper divisors (712492944595).

12111121031213 is a wasteful number, since it uses less digits than its factorization.

12111121031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114483.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 12111121031213 its reverse (31213012111121), we get a palindrome (43324133142334).

The spelling of 12111121031213 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-one million, thirty-one thousand, two hundred thirteen".