12021001331124 has 48 divisors (see below), whose sum is σ = 29269713029760. Its totient is φ = 3832627455360.

The previous prime is 12021001331123. The next prime is 12021001331161. The reversal of 12021001331124 is 42113310012021.

It is a super-2 number, since 2×12021001331124² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12021001331124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021001331123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6025494 + ... + 7768434.

It is an arithmetic number, because the mean of its divisors is an integer number (609785688120).

Almost surely, 2^{12021001331124} is an apocalyptic number.

It is an amenable number.

12021001331124 is an abundant number, since it is smaller than the sum of its proper divisors (17248711698636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021001331124 is a wasteful number, since it uses less digits than its factorization.

12021001331124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767960 (or 1767958 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12021001331124 its reverse (42113310012021), we get a palindrome (54134311343145).

The spelling of 12021001331124 in words is "twelve trillion, twenty-one billion, one million, three hundred thirty-one thousand, one hundred twenty-four".