12301142213521 has 16 divisors (see below), whose sum is σ = 14095053180288. Its totient is φ = 10516388256000.

The previous prime is 12301142213509. The next prime is 12301142213543. The reversal of 12301142213521 is 12531224110321.

It is a cyclic number.

It is not a de Polignac number, because 12301142213521 - 2⁵ = 12301142213489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12301142213521.

It is not an unprimeable number, because it can be changed into a prime (12301142210521) 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, 25849666 + ... + 26321236.

It is an arithmetic number, because the mean of its divisors is an integer number (880940823768).

Almost surely, 2^{12301142213521} is an apocalyptic number.

It is an amenable number.

12301142213521 is a deficient number, since it is larger than the sum of its proper divisors (1793910966767).

12301142213521 is an equidigital number, since it uses as much as digits as its factorization.

12301142213521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481272.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 12301142213521 its reverse (12531224110321), we get a palindrome (24832366323842).

The spelling of 12301142213521 in words is "twelve trillion, three hundred one billion, one hundred forty-two million, two hundred thirteen thousand, five hundred twenty-one".