12015054221343 has 4 divisors (see below), whose sum is σ = 16020072295128. Its totient is φ = 8010036147560.

The previous prime is 12015054221323. The next prime is 12015054221363. The reversal of 12015054221343 is 34312245051021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12015054221323) and next prime (12015054221363).

It is a cyclic number.

It is not a de Polignac number, because 12015054221343 - 2¹⁶ = 12015054155807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015054221323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002509036888 + ... + 2002509036893.

It is an arithmetic number, because the mean of its divisors is an integer number (4005018073782).

Almost surely, 2^{12015054221343} is an apocalyptic number.

12015054221343 is a deficient number, since it is larger than the sum of its proper divisors (4005018073785).

12015054221343 is an equidigital number, since it uses as much as digits as its factorization.

12015054221343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005018073784.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12015054221343 its reverse (34312245051021), we get a palindrome (46327299272364).

The spelling of 12015054221343 in words is "twelve trillion, fifteen billion, fifty-four million, two hundred twenty-one thousand, three hundred forty-three".