12021424435140 has 96 divisors (see below), whose sum is σ = 33743182037376. Its totient is φ = 3197791457280.

The previous prime is 12021424435109. The next prime is 12021424435147. The reversal of 12021424435140 is 4153442412021.

It is not an unprimeable number, because it can be changed into a prime (12021424435147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404978739 + ... + 405008421.

It is an arithmetic number, because the mean of its divisors is an integer number (351491479556).

Almost surely, 2^{12021424435140} is an apocalyptic number.

12021424435140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021424435140 is an abundant number, since it is smaller than the sum of its proper divisors (21721757602236).

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

12021424435140 is a wasteful number, since it uses less digits than its factorization.

12021424435140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46149 (or 46147 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 12021424435140 its reverse (4153442412021), we get a palindrome (16174866847161).

The spelling of 12021424435140 in words is "twelve trillion, twenty-one billion, four hundred twenty-four million, four hundred thirty-five thousand, one hundred forty".