12001111121231 has 8 divisors (see below), whose sum is σ = 12009175263120. Its totient is φ = 11993047973568.

The previous prime is 12001111121191. The next prime is 12001111121249. The reversal of 12001111121231 is 13212111110021.

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 12001111121231 - 2¹⁴ = 12001111104847 is a prime.

It is a super-2 number, since 2×12001111121231² (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 (12001111141231) 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, 24742400 + ... + 25222778.

It is an arithmetic number, because the mean of its divisors is an integer number (1501146907890).

Almost surely, 2^{12001111121231} is an apocalyptic number.

12001111121231 is a deficient number, since it is larger than the sum of its proper divisors (8064141889).

12001111121231 is a wasteful number, since it uses less digits than its factorization.

12001111121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497113.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12001111121231 its reverse (13212111110021), we get a palindrome (25213222231252).

The spelling of 12001111121231 in words is "twelve trillion, one billion, one hundred eleven million, one hundred twenty-one thousand, two hundred thirty-one".