12021231311131 has 8 divisors (see below), whose sum is σ = 13738571771904. Its totient is φ = 10303896275880.

The previous prime is 12021231311099. The next prime is 12021231311147. The reversal of 12021231311131 is 13111313212021.

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 12021231311131 - 2⁵ = 12021231311099 is a prime.

It is a super-2 number, since 2×12021231311131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021231311171) 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, 6192096 + ... + 7898386.

It is an arithmetic number, because the mean of its divisors is an integer number (1717321471488).

Almost surely, 2^{12021231311131} is an apocalyptic number.

12021231311131 is a deficient number, since it is larger than the sum of its proper divisors (1717340460773).

12021231311131 is a wasteful number, since it uses less digits than its factorization.

12021231311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712761.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12021231311131 its reverse (13111313212021), we get a palindrome (25132544523152).

The spelling of 12021231311131 in words is "twelve trillion, twenty-one billion, two hundred thirty-one million, three hundred eleven thousand, one hundred thirty-one".