12021221010024 has 96 divisors (see below), whose sum is σ = 33622860311040. Its totient is φ = 3876065654400.

The previous prime is 12021221009969. The next prime is 12021221010041. The reversal of 12021221010024 is 42001012212021.

12021221010024 is a `hidden beast` number, since 120 + 212 + 210 + 100 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12021221009979 and 12021221010006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3744789 + ... + 6169755.

It is an arithmetic number, because the mean of its divisors is an integer number (350238128240).

Almost surely, 2^{12021221010024} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021221010024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16811430155520).

12021221010024 is an abundant number, since it is smaller than the sum of its proper divisors (21601639301016).

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

12021221010024 is a wasteful number, since it uses less digits than its factorization.

12021221010024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427231 (or 2427224 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021221010024 its reverse (42001012212021), we get a palindrome (54022233222045).

The spelling of 12021221010024 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, ten thousand, twenty-four".