12021311021231 has 8 divisors (see below), whose sum is σ = 12139157767680. Its totient is φ = 11903566090648.

The previous prime is 12021311021177. The next prime is 12021311021233. The reversal of 12021311021231 is 13212011312021.

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 12021311021231 - 2¹⁰ = 12021311020207 is a prime.

It is a super-2 number, since 2×12021311021231² (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 (12021311021233) 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, 25216661 + ... + 25688958.

It is an arithmetic number, because the mean of its divisors is an integer number (1517394720960).

Almost surely, 2^{12021311021231} is an apocalyptic number.

12021311021231 is a deficient number, since it is larger than the sum of its proper divisors (117846746449).

12021311021231 is a wasteful number, since it uses less digits than its factorization.

12021311021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50907933.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12021311021231 its reverse (13212011312021), we get a palindrome (25233322333252).

The spelling of 12021311021231 in words is "twelve trillion, twenty-one billion, three hundred eleven million, twenty-one thousand, two hundred thirty-one".