12054240540221 has 16 divisors (see below), whose sum is σ = 13205282549760. Its totient is φ = 10912457373120.

The previous prime is 12054240540211. The next prime is 12054240540313. The reversal of 12054240540221 is 12204504245021.

It is a cyclic number.

It is not a de Polignac number, because 12054240540221 - 2¹⁸ = 12054240278077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12054240540211) 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, 2660111 + ... + 5584323.

It is an arithmetic number, because the mean of its divisors is an integer number (825330159360).

Almost surely, 2^{12054240540221} is an apocalyptic number.

12054240540221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12054240540221 is a deficient number, since it is larger than the sum of its proper divisors (1151042009539).

12054240540221 is a wasteful number, since it uses less digits than its factorization.

12054240540221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925796.

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 12054240540221 its reverse (12204504245021), we get a palindrome (24258744785242).

The spelling of 12054240540221 in words is "twelve trillion, fifty-four billion, two hundred forty million, five hundred forty thousand, two hundred twenty-one".