12254544545221 has 16 divisors (see below), whose sum is σ = 13378519788480. Its totient is φ = 11132226622080.

The previous prime is 12254544545213. The next prime is 12254544545251.

12254544545221 is nontrivially palindromic in base 10.

12254544545221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12254544545221 - 2³ = 12254544545213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12254544545251) 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, 83921545 + ... + 84067441.

It is an arithmetic number, because the mean of its divisors is an integer number (836157486780).

Almost surely, 2^{12254544545221} is an apocalyptic number.

12254544545221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12254544545221 is a deficient number, since it is larger than the sum of its proper divisors (1123975243259).

12254544545221 is a wasteful number, since it uses less digits than its factorization.

12254544545221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151524.

The product of its digits is 2560000, while the sum is 46.

The spelling of 12254544545221 in words is "twelve trillion, two hundred fifty-four billion, five hundred forty-four million, five hundred forty-five thousand, two hundred twenty-one".